This is a lovely picture, very nicely framed, and the dynamic texures in the foreground sand really add to the mood. On the whole, I like the post-processing as well, with an extended mid-range tonality which suits the picture. However, there are some problems where the rocks meet the sky, which look like over-sharpening halos to me. This may only be in the jpeg we are viewing here, of course, and not in your master file. Whatever the cause, they don't look nice, and shriek "digital" at the top of their voice.