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Nsio explains: Constructing and Analysing by Nsio Nsio explains: Constructing and Analysing by Nsio
It's already ninth tutorial in my "Nsio explains" series. This time I'll talk a little about constructing and analysing your drawings.

Why should you construct and analyse your drawings?
First of all, if you are an artist with no prior experience about drawing, it's unlikely that you can draw anything right in first go, yet alone in one go. It takes a lot of practice and experience to be able to draw things without sketching first.

Let's imagine, that you are drawing a human figure. You start from one eye, then draw the other. You keep going and draw the cheek and chin. At this point you might already have done a mistake. If you spend some time to analyse your work now, you can probably still save it. However, you just keep going, drawing more individual details. And if you are really fond of details, you might have spent a lot of time on a detail which may not even be right. If your great detail doesn't contribute or causes problems, it needs to be sacrificed. However, the time and effort you spent on that fine detail makes you unwilling to sacrifice it. The next details you draw are forced to follow the wrong detail, accumulating issues one after another. When you finally look what you have done, it's already too late to fix the drawing. It would take too much effort and the results wouldn't probably be satisfying either.

This is why constructing and analysing your drawings is so important. If you construct your drawings in logical manner, you can save a lot of time and effort in fixing your drawings. Analysing your work in regular intevals as you keep working on your drawing ensures that you won't be putting too much effort on something wrong.

Checklist
Self-analysis is the foundation of improving yourself. You will need to evaluate your actions and be able to see what you are doing wrong. Once you know our issues, you can start working on getting better at them.

Here I compiled few common issues, but seriously, the amount of possible issues are numerous. And even the matters I have covered are explained in very general level. Also the source of the issue isn't always as obvious as it may seem. For example, the character head may look too small in comparison to the body. However, you can also consider that the body appears too large when compared to the head. Either the head or the body needs to be fixed. It can also be, that the scale and proportions of the torso just makes the head look smaller. That said, there may be only one or several factors affecting the perceived issue. You will need to decide which feature you will sacrifice for the greater good.

I'll talk about few issues I tend to struggle most.
  1. Symmetry: It's fairly easy to draw something perfectly symmetric by drawing one half and then mirroring it. The problem emerges when you need to draw something symmetric in 3D space. To see the symmetry, you need to understand how perspective works. Also, you need to know that human body is rather symmetric, even if the pose isn't symmetric. Most common issues with symmetry tend to emerge around the head. The neck may appear to start from the shoulder, the mouth and nose have taken the liberty to locate themselves indiscriminately and the eyes are not from this world. You will need to learn to see the relative positions of the bodily features and make decent guesses when drawing them.
  2. Proportions: You will need to learn seeing the body proportions in perspective. Probably most common issues are arms and legs that differ in length. Even when foreshortened, the arms and legs need to look equal in length. I usually compare the body parts together to see which is longer. Then I evaluate whether it's enough if I fix only the other, or do they both need fixing.
  3. Scales: Often accompanying proportional issues, it's quite common to draw some body parts larger or smaller than it should be.
  4. Orientation: This is very important and hard. To see the orientation, you first need to see the perspective. Then you will need to know how each body part can move around and how the other body parts are affected. Drawing the hand in certain orientation will restrict arm positioning. If you fail with the orientation check, you may have poses that are physically impossible.
  5. Dynamism: Here we have the dynamism yet again. Without dynamism, everything looks plain and boring. Having been dabbling with dynamism for years, I can already come up with quite good dynamism. It gives reason for the element in your drawing, making them not only natural, but also justified.
  6. Patterns: These are often really annoying. There are two types of patterns: wanted and unwanted. Usually unintentional patterns are unwanted, for example starry sky with rational star placement. Unintentional patterns usually manifest themselves on elements where a lot of similar features are drawn next to each other. Such things are wrinkles and drapes on clothing, strands of hair and frill to mention some.
  7. Logic: This is neglected very often. Even if it's possible for the character to take a certain pose, it may not always make much of sense. Usually these poses are unnatural and stiff.

If you keep working on your drawing for quite some time, you will become blinded to it. If you mirror your drawing, it will look like a completely new drawing, making it a lot easier to see the issues. Digital artist have it easy, but traditional artist can use a real mirror and rotate the canvas as well.

When you trace your sketch, remember that your goal isn't copying it. The sketch is there only to give you some rough idea of the final results. That said, you don't have to follow the sketch too strictly, especially if it's not perfect.

Example of constructing and analysing
I though an example would be most useful way to explain how to work on your drawing.

When I draw, I work on phases. Each phase has it's own focus points and goals to achieve. The benefit of working on these phases is that I can focus only on few things at time. The phases are
1. Idea
2. Rough Sketch
3. Refined Sketch
4. Lineart
5. Post-processing

The first phase is useful for trying out many alternatives without using too much time or effort on the drawing. If I don't like the pose, I can easily discard it. I can also try to find a pose that's more fitting or justified for the character I'm going to draw. I went with the third. The fourth is there just to "pre-evaluate possible errors with the drawing".

Second phase is the most important of all of the phases. All major issues should be fixed on this phase. Well done work here will pay off on later phases. At first I draw the full body without paying too much of attention to the issues. After I'm done in 5 mins or so, I start analysing the errors. I use lasso selection to relocate and rotate body parts. I also redraw many parts to fix major issues. I have included my quick rendition and it's fixings. Drawing the character naked is important, because that's the only way you can truly test where the body parts go. Also, naked sketch will serve as a base for the clothing. If the drawing requires major changes, they can still be done. However, a good rule of thumb is that "when you have chosen a pose, stick to it".

I really recommend spending a lot of time on rough sketching. I used to draw at least two or three rough sketches of the same body, because drawing the body from scratch was often easier than fixing the faulty one.

On third phase, it's time to make a preview of the final drawing. All important details and features should be present here. The line quality doesn't matter though. I often draw most important and hard details (such as fingers) quite detailed already in order to make it easier to draw them on next phase. I usually draw some sort of shading as well, and often I won't take the drawing further than this. It has already served as valuable practice work.

On fourth phase, it's time to draw the final lineart. On this phase, the focus should be solely on the linework. While issues should be fixed when they emerge, the point of the two earlier phases is to get rid of them so that the focus can be put solely on making pretty lines. If I'm going to color the piece, this is enough work for now.

Fifth phase is either coloring or inking. Here i just went with solid black and one bluish shade. When the work is done, I usually appreciate it for some time and then after few days I do post-analysis. This piece came out pretty neat, though the legs could have benefited from some extra attention, especially the armor parts and feet.


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:icontempestofazure:
tempestofazure Featured By Owner Oct 27, 2014  Hobbyist Traditional Artist
These are some awesome and helpful tutorials. I don't mean to request but do you have any tips on lighting/shading? While the sphere example is good for breaking down the complexities of shadow it does very little for me in the way of demonstrating how light wraps around a more complex form(ie muscles, clothes, textured surfaces, etc), so my shadows end up looking improperly placed. I imagine it has something to do with planes facing light but can you help me expand on this?
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:iconnsio:
Nsio Featured By Owner Oct 27, 2014  Hobbyist Digital Artist
For starters, read this tutorial to understand how light works gas13.ru/v3/tutorials/art_tuto… . It's good to note that the transition from light to shade isn't just fussy gradient. Also, you don't simply add white to lighten  or black to shade things. I suggest reading a little about 3D rendering, especially about terms "radiosity" and "color bleeding".In short, the perceived colors depends on the environment. For example, in candle light the lit areas have very warm coloring and the shadows are dark. If you stand outside under the sky, the shadows get pale blue tint because of "global illumination". Consider it as a secondary light sourcewhich illuminates the subject all around, although it's only visible on shadows because it's weaker than the sun.
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:icontempestofazure:
tempestofazure Featured By Owner Nov 1, 2014  Hobbyist Traditional Artist
Thank you! This gives a explanation as to why my areas of shadows have made my characters look like flat lifeless dolls. Also being able to take the color of the light source into account (which is oddly something I hadn't considered before bunneh icon17 ) gives me more options to establish contrast within the picture. I realize I will need much practice on the aspects of shadows (especially refracted light within a shadow) but it's nice to have sources to draw information from. Once again, thanks!
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:iconkaishosohando:
KaishoSohando Featured By Owner Oct 1, 2014
Wow this is really damn detailed in info, thanks for doing this!!! Freakin amazing! :happybounce: La la la la Clap 
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:iconkaishosohando:
KaishoSohando Featured By Owner Oct 1, 2014
Wow this is really damn detailed in info, thanks for doing this!!! Freakin amazing! :happybounce: La la la la Clap 
Reply
:iconkaishosohando:
KaishoSohando Featured By Owner Oct 1, 2014
Wow this is really damn detailed in info, thanks for doing this!!! Freakin amazing! :happybounce: La la la la Clap 
Reply
:iconcandyblossomchan:
candyblossomchan Featured By Owner Sep 20, 2014
this is ULTIMATE!!
thank you so so much for taking your time to do this! I am so grateful ;v; It helped me a ton and i know it helped so many other people! /pat on the back + kissu
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:iconkillerdrock:
KillerDrock Featured By Owner Sep 8, 2014  Hobbyist General Artist
You Rule!!!
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:iconelika2000:
Elika2000 Featured By Owner Aug 20, 2014
You are AMAZING!!! (that is all I have to say!)
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:iconkerrens2003:
kerrens2003 Featured By Owner Jul 24, 2014
I can't ever draw pretty digital lines, they always come out raggedy and not smooth, and the line width varies along the length. I'm pretty sure I shouldn't be using photoshop for line drawing, but I have no idea what program to use to get nice lines, or how to set up to do it.
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