Any improvement?

Any opinions on how to improve this? I used a sea floor stock and a sort of frosty background and overlapped them for the background. This time I experimented with lighting and some gradient maps. Still a MAJOR noob in regards to gradient maps, any advice would be fantastic. Looked at Kimo's guide and Flyin's tutorial for some pointers, couldnt find the gradients in Kimo's guide and I didnt want such an Orange lighting effect. Any comments tips or criticism is appreciated

umm first its nice, but there is a giant hole between the left side and the render .. there is nothing there maybe if u could make ur rende bigger or just to move some of the c4d's near the render and make a bit dark left side . The light is a bit strong little lower it , next i dont think that it's cool to place ur text on the render maybe from the left side it will look way more good ... mm yea the right side like u desaturated ?idk but if u can make it a bit color like the top left side of the c4d from left i think it will be more cool .. and that think the c4d from the left shoulder maybe remove it .. hope i help u