When I was in college, I took a psychology course where we learned to “interpret” simple drawings that people typically do–of a house, a tree, and a person. I wish I remembered all the little clues that you can discern from a drawing–I do remember that if people drew a tree with roots, that showed evidence of a “well-rooted” personality.
In any case, the above URL is a place where you can draw and have your personality analyzed. (And don’t make fun of my pictures if they come up!) Have fun!