Nice clouds! If only looking at the sky, you get a great sense of distance! However the same is lost when looking at the water-line. Try playing a bit more with the water color both for establishing distance, and also where it meets the sand :) Keep it up!

Thumb up just for the first line of your comment.

But the image is boring, sorry.

The sky, the tree and the sand with the sea don't even match to each other. It's like 4 different images in one. You should try to combine them! The shadows over the sand, some colours shared on every object. try add some dynamics to he leaves, don't you say something about wind?