nice shot. i like the basic composition, cropping, and the soft lighting that fades into the darkness of the background.
the only thing i would do different--and maybe i'm being angularly anal--is fix some of the geometry. i would make those columns plum so they're running parallel with the vertical edges of the image. then--assuming i thought about it when shooting--i would have the model's left upper-arm positioned so it was also parallel with the column and her right upper-arm parallel with the horizontal edges of the frame. i'd also have her right leg parallel with the column and leave her left leg as is at the angle. her forearms and left leg would then make 30 to 45 degree angles that would compliment the floor tiles, the upper-arms and right leg would would compliment the vertical and horizontal axis (axises?), and the whole image would have an interesting symmetry to it... at least i think it would.
now that i've thoroughly confused myself and maybe others with all this right/left, up/down, side-to-side, and 30 to 45 degree positioning, I'm done offering my two cents, for whatever it's worth....
probably just two cents.