I'm not sure but I think I've seen this design used on another cover before. I only think that because I once tried to use that cover(can't remember which it actually was) and make a template for myself. I attempted it and it came out nothing like how his did. I hope it's his actual cover template I am talking about otherwise I may hang myself because I spent so much time trying to edit the original for my own use, and after so much pain and aggrevation I just tossed it.
But what do I know?