I can't comment on depth and lighting because I'm hilariously bad at those but some of the lines look very pixelated
No idea why, I never had that happen to me when pentooling
Also this was probably far from a finished product but I think the lines and effects drown out the render (figurateively, but also almost literally since only his head is popping out)

good design, for a 10k+ item it can be marketing question xD

would be cool to see what you could do with a sports themed sig

washington capitals have a great colour combo