This is a job for an artist, the designs are for a silk screen or print on a tee shirt that will appeal to teens and young men.
you must provide me a sample artwork for the shirt, hopefully jpeg or bitmap, you may watermark it but only with the words sample, not your name or any other word.
do not bid if you will not submit, your bid price plus how many artworks can your bid buy.
I am buying plenty, characters or images must not be right protected, but can be similar , like a caricature or a drawing of a joystick. I know there can only be one winner, but those who submit nice drawings i will pay on escrow, then release me the save file complete with vectors, then i will release the escrow.