Just goofy and cartoonish, crazy eyes, goofy expression, like tongue sticking out or something like that. Anything you can come up with, i want it to be unique and weird, just like me :P.

I'll post some reference pictures later today.

Edit:
Ok so i figured out reference for this type of set is nearly impossible, but like i said, goofy, crazy, bright colors, cartoonish etc.. I doubt these pics will help but have a look.