I agree w/udbacker: very good for a first try, Eamus. Still, I'd strongly recommend to pick up Photoshop or PaintShopPro, since the best custom cap & uni templates have been made in those programs, far as I know. That's how you'll get the best and most realistic effects (shadows, textures, buttons, stripes, side-panels, etc.)
Edit: Oh and the colors for the German flag should be black, red and yellow (we wouldn't want Markus and co. to get upset for getting their home country's colors wrong!

)