Just in the left side of the signature, the C4D -or what that is- is someway not matching the signature, try to erase it slowly, or blur it.The text is fine, but you could also use normal-like fonts, as Tahoma, Verdana or Centruy Cothic.The lighting and depth seems fine for me (you could sharpen just a bit he face).The red colors are looking just great.The whole color is one of my favorites, that's why I called it exceptional.By far, one of the best creations from you.This is my opinion.Many others could call it rubbish, but I like it very much!
-Blane