Nice idea, pretty good tones, though I think you could have used a little reflected light frontal. Also I note that there's a lack of clarity in parts of the photo that look like this was shot with too low of a shutter speed. Still, good idea.
I feel the focus should have been most clear on the hands and book. Adjusting contrast down to bring the short shadow to the left alittle (of image) and also decrease the brilliance of the light just under the book might have also improved this image. 6. Good lcuk.