Boxing Mantis

Firstly, the detail is fantastic. His head is so clear, it's incredible.
Nature shots are more difficult to master because for the large part you have no control of the shot (as far as positioning or objects in the background). I'm referring mostly to that bright yellow blob under his... legs?
The crop is good, although I think it's a little too centered (you have a tendency to do that ).
A larger DoF would have done an incredible job here, although I like the black background. It's simple and really amplifies the mood.
Good work, all around