Love the colors and the silhouettes of the horse and shrubs. Have you thought about trying a panoramic crop taking some off the top too (below those power lines) The gorgeous color is so predominant that you wouldn't lose anything there if you took about a third off the top.
Really great sunset shot. Stunning colours and silhouettes. I really like both crops but this one is my fav. I like the power line at the top and also being able to see more of the tree on the right edge. Fav