Second pic, as Poppy says : the right arm is bad! when posing a doll see how the pose feels yourself. If you cant do it, she shouldnt
Hair tucked back behind the shoulders is unnatural, let it fall over the shoulders and frame her face.
If you want to bring the doll out, make the environment muted. The pinks and reds are beautiful, but overpower the doll's presence. The Blue Bra is just a jarring contrast to the softer colours, and contrasts to her knickers.
A more muted environment and matching lingerie would make her stand out far more.
Finally as Sam and Harem say, A beautiful shoot is great to sell the doll, but also include what I call "Honest Doll Pics" where its just the doll, so that all details can be clearly seen. Body shape, detailing, breast shape and size etc. your buyers want to know these things.
hth
K