Fixing Perspective

i understand the pictures but not the notes. i understand what you are depicting in the blue. but in the the red on the right hanbd side (B section) at top i am lost. it says"note the dimensions", i'm not sure what i am looking for.... like i dont understand what the attemptwas. was it that you were trying to show how a person  who does not understand perspective is attempting to draw the Blue diagram underneath? if so then i understand!! if not then i am lost lol. also i am lost at the arrows next to the "do it", but if those are eyeballs depicting point of view then i do understand. just trying to get.. i only started to think they were eyeballs during my typing of this. so if that is the case, i also understand! lol. i am only sending this just in case someone else comes along. it is a very good tut as are all your others.

my last comment was about the A section red diagram.. i just realized that they are in fact eyeballs and that i understand what the slope looks like. the grid on the ground as in viewing from above and that would make the ball be rolling down from a looking down pov.. hmm.. clearly im answering my own questions (which makes this an even greater tutorial)

gonna go ahead and favorite this!