Full Metal T-Shirt is a relatively new design competition. Winners are chosen weekly, and get $200, a free copy of their shirt, and a $5 residual per shirt and art print sold for an entire year.
Despite being new, they’ve already started pumping out some great designs. You can check out an example of some of their stuff by reading the post I wrote about their Aqua Lion shirt. Prices are moderately expensive at $25 per shirt, but the designs are great, so who really cares? Get shopping!