There are two major problems that I see. The first is proportions. Her legs are far too long, especially considering the angle. The lower part of her leg is also too long in proportion to the thigh; you have the same problem with her left (from our perspective) upper arm being longer than her forearm. They should be equal in length. Her neck is too long and her breasts seem to be too far down on her chest. In regards to her face, it appears to be too wide and the eyes are too far apart (they should be one eye's width apart). The nose is unnaturally straight and the lips should be higher.
The second problem is perspective. The woman, the bed and the little objects are all being viewed from different angles. Additionally, you're missing the foreshortening that you need to make the pose look realistic. My recommendation for you here is that you use a reference.
Another detail is that there are some inconsistencies in the direction of light. One is the facial shading, another is the shadow in front of her, another is the shadow cast by the objects on the right side of the bed and the last is the shading on the dresser.
Lastly, her left hand (from our perspective) is backwards. The thumb should be facing inwards.
I do like the crisp, black and white style that you used.