Nothing major, its not all C4D there are alot of small changes like for instance majoirity of the splash effect is hand done with the brush tool and my tablet. so yeah thoughts?
Like Draven, you seem to have your problems in lighting and coloring. If that blob wasn't there, it would be so much better. It just makes it look horrid, and so fake. The yellow coloring is OK. It would look better if you selectively colored it, taking the yellows and lowering the yellow on it or upping the reds. Go for a yellow with tint of orange. I would have completely changed the coloring around but you seem to have done too much to change it.
That blob? I understand the direction you are going with this, the stock allready had strong light, it alittl over done. Might have to restart...
I think it's good. The text is bothering me and the yellow spot is a bit too obvious =/ but who cares. The sig overall looks great