Sorry, was probably a bit too negative.
My main issues are the background colours, not a nice mix. The images are cut well, not a bad job there.
The font is used far too much and bores the hell out of me! Plus the effect is poor.
You've got potential to make something better, you just need to be more creative. At the moment it just looks like you're trying to use as many PS functions as possible, and that doesn't make a good piece.
Be more careful with your colour choice, be a bit different with your font choice and remember that blending options don't always/rarely do make a good signature.