I like the lighting, colors used for clothing and background. Light coming from below gives unusual feeling to the picture, like fetus pictures - they look always bit odd. What comes to colors, nice harmony in there, green and violet. Black reduces visible size of legs, making featus position more believable.
Good position, but I remember fetus having a bent back. At early stages it has only that little bent back, huge head (where that long hair helps) and tiny limbs.
In this picture limb positions are nicely placed. I can imagine them moving around. Still I'd like to see whole back bent a lot.
No, I didn't look carefully whole series. Just caught this one from 's main page and checked that this is a part of series.