I think you ehanced the horse's look with a really nice way.
The background is just sketched thanks to the same color between the closing and the sky, you could not do that with a colorful picture, and it's really graphically good.
Maybe a little expansion of the framing would be interesting : The subject would more circled by the white of the sky could be more "protruding". Maybe it could give you an idea ? So I think is a really little detail !
So is a really beatiful image like that, and is a great shot with a cute and expressive horse !!! Well done !
Thanks for the feedback, I really appreciate it I agree with you regarding the framing, it would probably have been better to move to the right showing more of the rider. The original have more sky, I might take another look at it. Once again, thanks for taking the time writing the critique.