I personally don't care for it, the only thing I can make out is the helmet, everything else is kinda distorted or splochy.
your backgrounds seem kinda grungy, but im not seeing the flow that i would normally want to see.. maybe try smudging it or something? i do like the colours though, very intense!
The blending of the render and the background is a bit odd... Try and increase the contrast between the focal and the background a bit, then smudge for blending. Also, the font really doesn't match the grunge style of the sig. The lighting is a bit off too; you might want to change the levels a bit in the background, and have the lighting effect the background more as well. As Knight said, the colors are interesting.