The clouds look nice, though the image overall feels a little dark. I think there doesn't seem to be much of a focal point. Maybe some other elements to the scene would have served to give the image more depth - something in the foreground perhaps, or something to lead the eye into the scene.
"The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts." Bertrand Russell
I agree with all of the above statements and I'll add this: This image by itself is just another sunset image, although there is no thing as too many sunsets, but if you add something to the dark foreground, a poem or quote perhaps, it could become a very nice image (poster) whatever you want to call it. The capture is beutiful but the image needs some work.