To me, the most prominent feature is the headless horse and in exchange for a head, the bodyless tree-branch at the top. That in combination is so striking to me... the barn is merely setting a stage. If you can't resurrect the horse's head, I'd suggest to try clone the two horseparts out of the scene. But... as I said, I like the effect of having the headless horse and the twig at the top - as long as you don't want me to enjoy the barn as the main subject.
Another little distraction is the plant that touches the left frame with it's round "head". THat doesn't help in both ideas mentioned above.
cheers
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