Edit: I just saw that @artamazon posted and mine is a bit similar, but still...
I like the colours and how you did the waves! One quick tip is to make the horizon line completely straight. Right now it’s a bit wavy, but in reality the horizon line is so far away that it will look completely flat, even if the water has waves (hope you get what I mean).
For the clouds I think it helps if you make them follow the perspective of the sky, so for example the clouds that are closer to the horizon line will be smaller, and clouds “higher up” in your pix will be larger. Like this photo: