Great concept and setup for this picture. The cobwebbing is well done, especially the tangled threads to the left, they help add texture and theming. The webbing arching over her head and up at angles from the bottom really help frame the focus of the picture.
The outfit lends well to the theme and colors, but is too reflective and stiff for this picture/pose. Either the lighting needs to be a bit dimmer or dress should be flexible to help emphasise the model's curves.
I would recommend more emotion in the expression; fear, hunger, etc.