If you go to Walmart, somewhere in the plastic model section, you may find a decal making set from Testors. This is a small kit that has 1/2 of an 8 1/2 x 11 (8 1/2 x 5 1/2) sheet of decal paper. This might be big enough for your needs. You scan in or create the inage you want, print it onto the special paper, spray the paper with a special coating (AFTER the ink has dried over night, the coating is in the kit), and you end up with a water slide decal. Your LHS may also have this kit and full sized sheets of paper. It worth learning to do!