Also, the DISigners on Creative DIS will personalize the pictures for you. They are an amazing bunch who do all this work for free on their own time.
I just had M.I.C.K.E.Y. design each of my family's name filled with logo and colors of each of our football teams for Superbowl Sunday. I finished them yesterday and they turned out great. I can't wait to give to my husband and 2 DD.
Good luck with your shirts.