Love this! Scale is great, the atmospheric fading of the cliffs is great, and the comp is solid.
The only thing that seemed off was the bottom right corner, I had trouble finding the words to describe the issue, so I took the small version and painted over it to show you what I wanted to say, the shapes just weren't blending the same way the rest of your image did and did not make sense, kind of like there was a cliff in the ocean.
I am sorry if it bothers you or anything, let me know and I won't do it again. But I hope it helps. Really great image.