It doesn't matter what program you use - you need someone with graphic sk1llz.
I was playing around with it for a few minutes when PHOTOSHOP CRASHED. Of course that only happens when I don't save the file. I was able to create a screenshot - it fits your site's width perfectly.
Since I need to get some reading done, here's how far I got. If you like it feel free to use it.
EDIT: well, seems like while I was photoshopping you already made your pick

Nevermind, then ... I'm a bit slow when it gets late.