Both look great, thanks for sharing.
It's a very easy process. You just send in your picture, they come up with an initial design. then you go back and forth on changes. I think mine took about 5-6 revisions to add the Marine flag on the back, make the GW logo on the side bigger, put on the actual registration numbers, make the under side of the t-top blue...you get unlimited revisions. Usually takes about 24 hours to make the updates. Once you are satisfied with the design you finalize it and they send you the design in an email and it's yours forever (you can't make updates after you approve the final design). They also keep it on file so you can use it on their site for shirts, stickers, cups, towels....so far all of their products have been excellent. They even have GW branded shirts.