Study of the human figure - Using accents

You have captured the model's relaxed pose quite well. But I feel that you have put in a little bit too much conte in the background behind the model (in front, it is OK ... especially as it gives form to the box she is resting on).

Also, I think that the charcoal under the arm and in the rib area is a little too intense (I am tending to see a couple of "bulges" where there should be none).

Overall, very good.