the first is well done, the 2nd is nice as well but the size of the sig doesnt work out change the width, and it'll work much better
You have to improve your colors / lighting. As to the first one, the background is anti-flow to the C4Ds you used. The second one has a pretty nice flow. You do not use lighting very much, neither in the first nor in the second. The texts are distracting, lower down the opacity of those. I hope I helped ya a bit. Catch up old psds. o-o Keep practicing!
Thanks for the comments the first on i actually started using your tutorial then relized i didn't have any good C4Ds and didn't have time to go hunting so i just tried to make something work out after i was done like two steps lol
as mentioned....work on blending a little more and adding more depth. You have a great start, just some minor adj and be cool!