Another nice image, Javier. The composition and finish is not working quite as well as on your previous shot.
1. The focal length you are using for this shot is too short. It emphasizes and exaggerates your model's bust. This and the fact that you are shooting straight on exaggerates her size. With a model of this build, a shot where she is turned on an angle towards the camera will be more slimming. An 80 - 90mm focal length on your camera would work better too.
2. I don't love the lighting here. The camera left side of the face is in a bit too much shadow and the hot spots need to be toned down a bit.
3. Same comment regarding the neck and hair as the other shot of her you posted today.
3. Cropping the chest back to reduce the amount of black and cropping above her head would strengthen the image.
4. Clean up the dust on the sweater. Dust can be an issue with dark clothing.