@legion: Do you render yourself? Coz I just gave rendering a try and I suck at it xD
The effects around the render look cool and seem to be in flow with the render. But they really have no environment to compliment them. I think there needs to be more of that foggy/cloudy thingy in the background. The background doesn't really go with the effects either. So as I said there really is not much environment. And his eyes look pretty weird.
Personally I think the effects and render blending looks great. You just need more of those effects and fix the background. And yeah, the render is actually making the signature a bit lq. Thats a problem you have to face when you are working on requests