It's actually not that bad. Is this one of your first sigs?
Batman is not blended at all into the background, and the left shoulder is missing. I think it's a bit too big, but everyone likes different sizes (no, that's not what she said

). If you made the background (I hope you didn't just copy the background and paste batman on it), it looks nice. The brightness is good, and I like SOME of the effects you put in there. Goodjob.