A bit over sharpened by the halo around the silhouetted figures on the top of the cliff. I am not a fan of the composition. I would cut out a good deal at the bottom and trim a bit from the right side.
Fab image! I love the colours and the silhouette is great. The pose of the model is particularly nice, and seems almost 'triumphant', as if she/he has just scaled the rock she is standing on.
I think what would make this a 10 out of 10 for me would be if the rock face went all the way down off the edge of the image, instead of disappearing into the horizon. As it is though, this is still a fabulouse image and I am sure it will do well. 8/10
I like this shot as it is, but I think it could really be improved with a tighter crop to eliminate the lower black part that adds nothing to the shot. 6
A more expressive pose on your model would really nail the theme your looking for. I like the overall composition -- particularly the rock and the angle you've chosen.