Hey hey.
I love your setup there, the posing is great, the model expression and outfit is great.
- Composition could use some work, dont cut things halfway...cut them all the way or leave them there
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- Background...if you have to have that background, make sure they look seamless and continuous. So the folds and all have to be right, and hopefully reaching the ground.
- The PP on the first picture makes her look a little gray...sickly. Also, as people noted, a little off focus in the face maybe. I would stick to manual focusing if you are in studio and can use a tripod.
- The PP on the second picture looks great! I think it fits the mood and doesnt look too underexposed. Again, i would increase the temperature a little bit on those colours.
- Honestly, with the theme you were going i think going minimalistic with lighting is fine. Your lighting is soft and controlled no harsh shadows. The second shot is a great shot if you didnt cut her fingers, i think. And take away that little table near her foot.