Looks like a good start!
Some things that look a bit off to me are the hand on the arm seems to be coming out the wrong way, unless he has his arm twisted, speaking of arms I think you should probably be able to see a bit of his left one.
The angle doesn't seem quite right either, it should probably be a little bit more top down, I feel we can see too much torso/chest and neck, the neck especially would probably be mostly hidden by his head at this perspective.
I was using this dude as reference, seems fairly close to the stance you were going for.
