At the last session of the Academy's adult classes, Chance Raspberry was in attendance. Chance is a former student and is currently working as a staff artist on "The Simpsons" TV series. Here's a quick sketch he created as a demonstration.
Chance was showing the proper use of blue pencil sketching in the Character Design I class. By establishing a composition in blue pencil first, it's much easier to extract forms once the final medium is utilized. In this case, graphite pencil. The character Chance sketched out here is a design of his own creation.