Magnificent colours, magnificent foreground, fantastic sunset, good shutter speed considering that you captured the movement in the grass, yet the sea has detailed water motion. Very good composition in general.

My suggestion would be to crop the sky, maybe half of it or 1/3 of it. In my opinion it would strenghten its impact without really removing its awesomeness, to put it that way. Another suggestion would be to try and put on a warming filter in photoshop, at least I personally love its effect, and your photo has some blue in it that could be very nice if warmed up. But this is rather a matter of taste.