Yay! You're getting better. I love how you didn't use text. The thing I would focus on now is getting the background to match and move with the focal.
Not very much blending, in fact, I see none at all. I think if it was blended a bit better, it might work more.
I agree with mace, it is something that I have noticed in every sig you have made. Look at what everyone else makes, and see how their render is not plopped on top, but BLENDED into the rest of the sig. This is something that hasn't been addressed very much previously when we reviewed your sigs, but it has been one of the problems in every one. However it is a definite improvement. May I suggest you replace your older one with this one in your signature?