I really like the way that the railing on the right brings the eye into the center of the image. Is it possible to hold back exposure in the area in the upper left to open those shadows a bit more?
Well composed image! It must be tought to get an 8x10 set up in a library, and trying to make sure everything in your image is balanced.
You could really play with visual composition in images like this. For example, taking a few books on the right side of the image, and leaning them all over at a angle. This would hold the viewers eye into the image. Just a fun idea I thought of! Clearly you know what your doing thought because this is a beautiful image!