The composition in this is beautiful. It looks as if you're already using more than one weight of graphite. If you're not, you should seriously look into it.
It also looks like you took a picture of this with a flash, or some kind of bright light source. Unfortunately, graphite gets really reflective with any light source. You might try using a tripod or something stable for your camera, and shooting the piece without a flash in a darker environment. It would bring out a lot of details that really should be seen.
When working on paper like this, graphite can get a little messy and hard to control. If you don't want to work with smoother paper, I might suggest getting some rubber color pushers for your blending, and maybe considering working a tiny bit with mineral spirits. I'd say your skill level definitely calls for you to move to the next level.