I liked everything but the ending.
I like the more Tolkien-like elves, "cliched" or no, so I was rather disappointed that the rest of elf month didn't really have anything to do with them except this story. I liked the development of his abilities and the horse details seemed very authentic, enough to make me wonder if there are any stables around here that I could hang out at for a while. The character's drive to see the horse, the details about his father's shifting copulations were all quite interesting.
And then at the end the horse leaves and the words end. Not really a resolution, just a stoppage.