Great picture! A lot of different elements that I like. The verticality from the window frames on the left, the light and the dark from the shadows on the different surfaces. The model is beautiful in an elegant way and yet her peekaboo tattoo on her arm leads you to believe that there might be something more to her ... and as we all know, mystery is a great element. About the only nitpick I can offer is that the holes in the wall on the right of the picture are distracting. Maybe if there was more bokeh and the model was pulled more forward from the background?