Once again, you've shown your skill and mastery of the medium with which you choose to work.
You've capture the anatomy and shading down to a T, with a near photographic like finish.
My main gripe with the piece though is the fact that the background is nearly the same colour as the person, so there are some parts where the body seems to just melt into the background.
Also, the jeans are too dark to make any clear definitions, so it just seems like a black mass.