I've just discovered that the Forbidden Planet Blog has featured my Watchmen shirt design:
Forbidden Planet is a comics retailer with a location in New York that I have visited many times.
You can also check out and vote for the design on Splitreason's website here. (It is my understanding that its chances of being printed are good, so keep an eye out for it!)
Cubeecraft Iron Man GIFs - Animated gif from the Cubeecraft Avengers trailer by MKMOficial: