Flash exquisite corpse

ever heard if the game where a group draws a picture… one person draws a head… someone else draws a body… then the other one draws the feet… no one sees what each other drew until the end… when its revealed… i thought that would be a good viral type thing to do… only thing is… i’m clueless with drawing api… and i have no idea how to transfer each persons part… i wanna build a port of interactive flash activities… i’ve made a snowman maker…
http://snowmanmaker.web1000.com

anybody know any ideas… or any tutes for drawing api?