|Rico Lebrun works with Eric Larson as he draws a live deer in preparation for Bambi from Eye-Likey|
"I have often wondered why, in your life drawing class, you don't have your men look at the model and draw a caricature of the model, rather than an actual sketch. But instruct them to draw the caricature in good form, basing it on the actual model."
"In [drawing the model] lifting, for example - or other actions - we should drive at the fundamentals of the animation, and at the same time, incorporate the caricature. When someone is lifting a heavy weight, what do you feel? Do you feel that something is liable to crack at any minute and drop down? Do you feel that because of the pressure he's got, he's going to blow up, that his face is going to turn purple, that his eyes are going to bulge out of their sockets?"
Disney observed that young animators often dwelled on the individual parts of the body that they were animating instead of the expression of the overall pose. To better understand expressive poses, he suggested setting up a translucent screen with the model behind the screen, seen only by the shadow silhouette cast by a spotlight behind, which was in fact an old parlor game.
He goes on to suggest ideas for teaching about the components of facial expression, staging, music, dialog, and the understanding of what drives the movement of the figure. "The driving force behind the action is the mood, the personality, the attitude of the character - or all three. Therefore the mind is the pilot."
In this video, Disney talks about how his in-studio training program went beyond the static poses that were taught in typical art schools by focusing on the flow of movement, action, and reaction. (link to video).
Walt's interest in an in-house studio was initially inspired by animator Art Babbit, who brought his fellow artists to his home to do figure drawing. Here's more about Art Babbit's role in animation education at Disney in the 1930s.
Artist Rico Lebrun was brought into the program later in the 1930s, primarily to help with Bambi. Read about his Disney art classes here.
Full text of Disney's letter to Don Graham
The Illusion of Life: Disney Animation by Frank Thomas and Ollie Johnston
Drawn to Life: 20 Golden Years of Disney Master Classes: Volume 1: The Walt Stanchfield Lectures
The Animator's Survival Kit by Richard Williams (great book by Roger Rabbit's animation supervisor, who learned a lot from Art Babbitt and other classic animators).