An interesting composition and I like the positioning of the body within the frame. The nipple is almost a mark of punctuation there in the corner. The shadow itself disappoints me though - I'd like to see more form to it.
The actual shadow takes up most of the shot, and you can't see the edges enough to make out the shape of the shadow. Perhaps turning your body slightly towards the camera and pulling your light source a little closer would have created a tighter "sensual shadow".
I don't think the nude does anything for this shot. Maybe if the shadow was a sharper outline. . . I don't care too much for the crop right down the middle of the body. Sorry.
Well - compositionally, there is either not enough body or too much shadow - maybe both. A little more body and the curves in the shadow (bulb place higher) would make the shot - or even a close up of the shoe as its very interesting. As is - 90% of the image IS shadow and so loses its impact.