I like the hovering Aeronaut
Other than that - the rocks/cliff-boulders are very smooth compared to the inbetween debris like stones.
A little bit too much too look completely convincing. A few more cracks and splintered-off edges, chipping, gutters, and break ups would be helpfull, I think. Or some grooves running down vertically perhaps...
This is for the left picture: Sqe attempt_13-05-20 test 2.jpg
What more? Very good as usual.
CHeers, Klaus