: Do you have any production guidelines, or contest rules to mention?

: Maximum number of colors? maximum size (dimensions) for either the rough
: artwork or the finished art?

I don't have specific guidelines. Artwork should fit on a t-shirt. I won't limit the number of colors but fewer are cheaper. Complicated color interaction and required alignment make production more difficult. I'll reserve the right to modify the artwork or request people make any changes needed to make production practical/possible.

For now lets just see some more ideas.