Give me a hand

Leonid, this is an awesome and interesting subject. Thanks for sharing. Compositionally, do you think you need everything in this image to tell the story?  To me, everything in the background on the left of the frame (i.e., behind the main subject) doesn't contribute much. I want to see more of the interesting details of the "hand," but my eyes get distracted by the high contrast and content that appears in the background. You might try to crop it in various ways to really strengthen your story of the main subject, the "hand." I think you'll find one of those crops to do a better job. Very cool subject.