You should do it. But don't put your picture in the middle of the T-Shirt. Put it on the botton (left or right). Not to big. I would like it this way the most. OH MYYYY SORRY FOR MY BAD BAD BAD BAD ENGLISH!!!
I'd love to have a T-shirt with your works on it! As everyone has already said, cropped tops, tank tops, bags, notebooks, everything, would be awesome! I'd buy them And I'm sure a lot of people would too!