Just some quick thoughts:
- Necks usually connect to the back part of the bottom of the head
- Female hands are usually smaller
- Breasts hang a bit too much for my tastes
- Male looks a bit too thin
- Male torso/leg proportion seems a bit odd
Working in such small scale and outlines is not easy. I suggest using a higher resolution or working without outlines.
I might have overdone the slimming of the female leg...