This is actually well-done. The small white text on the top is a little annoying, and I think it's best if you lowered the opacity a little. The little C4D on the bottom left is a little out of place, and the white background on the left doesn't mix will with the shadow. The signature is a little too bright, not to mention that you sharpened it a little too much. Also, you could add more C4D on the right that goes with the flow (or at least rotate it so that it does).
Don't be discouraged by my opinion, I'm only pointing out stuff you should be wary of. Personally, you are improving from what I see here. Keep up the good work.