I think it's a lovely composition--the patches of light in the clouds lead you right into the picture (but not too quickly) and the leaves in the bottom right frame it all really nicely. And the colours! Oh my god, the colours. It's like eating and drinking at the same time.
Storm, dark waters, and shadows looming . . . and then this happily lit placid field of serenity. Great use of contrast. It comes to mind that a little lightning strike added into the background would have given an added sense of action, but honestly the more quiet looming scene works just as well. To say otherwise is just being nit picky.