Here are the pages I showed in class dealing with perspective and foreshortening. I'll be adding to this with a few other lessons. Perspective and foreshortening are important factors to gainging a sense of reality to your work. Not Realism, but Believeability. If you look at cartoon, animation, video game art, movie production art, illustration for books, games comics and others, perspective and foreshortening is a basis for much of that art. Please read these look them over and give them some thought as you draw your pieces.
I'm adding here also a link to Successful Drawing by Andrew Loomis. Between pages 20 and 78 of this book Andrew Loomis makes a pretty complete ( maybe overly complicated) explanation of perspective and how to use it in an image. Toward the end of the those pages he really gets into figures in three dimensional space.
https://www.dropbox.com/s/00foumbucuhj11d/Andrew%20Loomis%20-%20Successful%20Drawing.pdf
