Numbers 6 and 7 are the best ones from a directly GFX point of view. The others are chaotic, messy, or just plain simple.
Use less C4Ds, because they just make your art look chaotic and novice-like. Your text is absolutely horrible, except in the cases of 3, 6, and 7 (And, of course, the ones you didn't use text in). There really isn't much to see here, other than C4D + Render + Stock slapping. I must say, though, your render placement seems pretty solid. The only problem is that all of the other mishaps distract from that when posting to someone who is familiar with GFX.
I don't rate because it's stupid. Don't ask me to.
