It's pretty nice, if a little big for my liking (I think smaller sigs look nicer..) Also the pictures are a little too blended in my opinion too..it's hard to make one out from the other. Although it is a nice effect. Maybe be better if one was a bit bolder with the others faded in the background.

The resolution looks a little dodgy too but probably because they are screenshots. You tend to always get that with screenshots...game artwork can be a lot nicer looking to make sigs with =)