criticize on an image

I got it From Zbrush Central

This is one of the many images that I found out there that really show some very interesting conceptions by using the tools offered to create 3D. He has made a realistic (as he perceives it) image of a ninja turtle, not just the cartoon version but a more anatomically correct one. I like it because he didn’t just make a good 3d sculpture based on the comic but he used this idea and gave life to it and personality. I believe that he could use more reference to make a more realistic shell and try to give this hero a lot of scars in order to make it look like it wasn’t just a creation but had a pass and shit happens. I would prefer if it was obvious that he had lost something like an eye or a finger. I like his idea of using one colour that represents the hero, black and white. On the other hand because of this and a not so dynamic angle with a simple background, it’s missing depth in the image.