Very mysterious image!
Just one thing: you cut model's right elbow...

ok thanks eri fix

the front spider on her lap is at a wrong angle as it is on the "web-net" and not flat on her lap.

somehow, i felt the ninja girl in black should be placed in the bushes, a more assasin-like fashion, juz a suggestion

one has to wonder what she is hanging from when its clear she is well into the water where no trees are hanging.
The lighting on the hanging girl is coming straight down where as in the backgroung it looks like its coming from the left of screen.
The girl in the water would not be so bright and would also be smaller, she looks bigger that the rocks behind her in the waterfall, and I only say this because you can see the water base near her legs which is throwing off the size.