well...first of all, her face has shadows over it or something dark/smudges on her face. And please try to get rid of the lighting/brightness on the bottom of the sig. It makes the bottom of the sig blurry, hard to see, and it's quite disturbing. But it's a great choice of picture and I like those effects you put on the backround. Next time, make a 2/3 pixel border~~
^^
If I were to rate it, it would be 8.5/10.