This is a really interesting scene and I really love all the details in the rock especially the cool blues hues which really make the image for me. I find that including all the sky is unecessary though as there is nothing really happening there except for the moon which seems to be squished into the frame since it is on the very edge. My suggestion is to crop this image into a square format which would remove most of the excess sky above the clouds near the horizon as well as exclude the reflection of the moon. I tried this and it gives the image much more impact this way. It also makes the rock more prominent in the image and also emphasizes the strong curving line between the rock and the sand.