With no disrespect to any of the talented artists on the boards here, the guy you need to talk to is David Link. He did all the designs for a T-Shirt line I had back in the mid-late 90's. He is phenominal at taking your ideas and getting them into the real world. Super easy to work with...really easy going...a creative genious. His unique character creation is world class.
http://linkart.homestead.com/1.html
some designs:
http://linkart11.homestead.com/index.html
http://linkslick.homestead.com/index.html
Tell him Michael from "Icke Gear" sent you...he'll make time for your project.