What does /p/ think?
The extremely dark navy blue of the sea and sky immediately above it clashes with the colour of the sand. Either lighten the navy blue up, or make the sand more orangey.You may also want to lower the clouds down. The photo is too long vertically.
I think it's good stuff.
The sky and sea are so close in color that it makes it difficult to tell that those are waves breaking on the shore, IMO i'd crop out the crashing waves, or add contrast to the sky/sea to distinguish them
Also, Gaussian blur your layer mask... if you know what a layer mask is.