Really strong work this last one. I really like it alot!
Have the background continue below her. the white field that reaches up towards .. her.. is abit annoying. It doesn't place her in a room but rather some white space of nothingness.
I don't know if it's photoquality, but you don't really need those black lines on her thighs/back fof her yead. I think they're going too far away from your range of values. Abit less contrast to your darkest spots might help. Might be a question about taste though.
Last, nothing that you can do much about if you don't want to start all over, but really. Those hands. A wise conceptartist once said " your figures need to be able to wipe their asses ", think about the length of her arms.
Less blue on boobies!
Sweet work overall. The colours and the brushstrokes are really nice.