You ruin most of them by centering the render, which is a huge no-no and is one of the first foundations of tagging. Your text is gawd awful, it doesn't really blend and it sticks out like a sore thumb. Lighting placement needs work as well as color coordination. Pick up a color wheel and consult that every now and again, use compliments because I can assure you that brown, pink and purple are not compliments.
On a final note the C4D spamming, it's too much. Throw 4 or 5 C4Ds in, then a fractal, then color filters, and you get a mess that is too chaotic and has little flow or depth.