Nice effort, the waves look a bit murky though and quite a bit of banding in the sky.
Clarity and focus seems off, the colored versions are better.
Vaez, #4 has a nice mood to it. I agree with Grahame about cropping some of the bottom, not too much. A very heavy border would also help and I am normally not in favour of borders but a large white border would frame the scene quite nicely.
Cheers Ole