Two immediate things strike me:
1) Try not to bisect the image. Typically, when you cut an image in two, the brain is competing which is more important, in this case it is between the sky and the beach. The sky is brighter which attracts the eye. If this was my image, I'd crop just above or at the cliff on the left. This would promote the framing by the cliff of the left side of your image.
2) In this photo, I see no reason to have details in the shadows. To my eye, the most compelling element in the photo is the sunset reflecting off the rocks. I would hit the reflecting rocks pretty hard the dodge tool to create more drama. Details can dilute image impact. Often a simple image with fewer zones will be more powerful and successful than the same image with more zones and greater detail. But, like much of photography, this is all in the eye of the beholder and photographer. Remember, that with most images, you are telling a story ... so think about the story you desire to tell and convey to the viewer ... then compose and expose in a fashion that best reflects and tells your story.