No depth...bring out a focal point. Right now it looks flat and has no focal. Sharpen the focal and blur the sides. Also make the border solid all the way around, don't have anything overlap it.
There we go. And I'm keeping the border. It kinda grows on you. EDIT: That blue thing will be removed, I just don't know why it wasn't before. Stupid internet lag.
Well, it's a good try, but that just made it seem a bit more flat to me. Kind of like a paper texture was added to it.