Fretboard wouldn't work out to well. For shirts, well the image just has to be really large. I have done two designs for t-shirts but haven't gotten any feedback...HEY TOCS1000! How did that design work out? Also, I am thinking about doing stickers too. If anyone needs some stickers let me know, I can do bumper stickers too but there will be a minimum of 6...I think that's how many I can fit on a page.