I agree with llama, the big black splotch at the bottom is kinda distracting. Blur it and see if it distracts the eye less. Other than that I like it, especially the colors, I do love blue haha. KIU
BUTTTT lighting is way bright for me. lol, in my sigs i use natural light, like different effects for the layer, (color dodge, screen, lighten). Also the black splotch as stated.. remove it or blend it.. black isn't pretty for a C4D