Avery, interesting idea. I wish the image were larger so I could get a better view. Have you considered different crops off the left and/or right sides to see if that accentuates the lines of the arm, creases, and dark boundary more?
All the best,
Daniel
No, I had not. This is the full frame image, but you might be right on the left side crop, it would probably emphasis the curve of the crease and arm. Thanks for the input.