Beautiful body, for sure you are acting on your customers wishes
I would like to see a picture of the complete body in a straight position to see the proportions (especially chest to hips).
For the neck movement, it looks like the side movement is done in the shoulder to neck junction and the backwards/forwards movement is done at the joint neck to head.
It would look more natural if the shoulder joint would allow some back/foreward movement as well (just tested on my neck
).
I guess I asked already, will she have the textured skin?
Anyway, great work