I have this one on a text edit file somewhere, I have a long list of this posters to do. At the moment I'm taking a break, because of my studies but I'll be back for the summer with some great new posters for you to enjoy. If you're interested maybe you could check out some more of my other stuff, there's some AC3 stuff and some more "Keep Calm" posters.
Happy you enjoyed my work, thanks for commenting and look out for that Ackbar one hitting sometime in the near future!
I have mocked up a t-shirt on Redbubble(dot)com, it is not available to the public yet but it looks good and I think I'm gonna put it up for sale! I'll probably mock up a few more of my other designs, including my Death Star one: [link]