Love the construction of the back. But I see a little gravity issue (could be the cam angle as you took the photo). It seem that the figure is falling backwards. I also suggest to work on foreshortening practice of each body part. The left arm seem to be in the same plane as the back and I feel it shoul be little forward and similarly to the left leg the thigh should apear shorter to make it more proportionally pleasing and visible that is moving forward.
Well done for this piece and I am looking forward for more work from you.
Thank you very much! That sounds accurate -- the left is meant to be a bit more forward. I'll pay closer attention to forshortening next time!