The render doesn't quite blend with the whole effects that is going on in there. The gun and bullets feel out of place and the left side of the render as well, but that's only if you look at the left side of the sig for a couple of seconds. Text is also out of place and the sig is a bit large.
I like some of the effects but the brushes on c4d sorta ruin it imo. It's a little dirty and the brushes don't fit with the man being 3d and all. Overall i'd say it's nice you made your point in the sig, but could use some more blending. ;3