I think the background is a little bit too dark and the pic needs to stand out more. Right now, to me, it looks as if the background is standing out more than the pic and that's not how you want a sig to look. The text could also be better, it's a little too plain for this sig. Also, when you do sigs, you should put borders on them, it makes them look better.
Probably your best sig yet, good job. The only bad thing is the metallic text since it doesn't fit with the sig.
