SO PRETTY. The only thing that stands out as not perfect to me is the horse's hind end. It's very weak. the croup/bum should be higher and the thigh more built. And the horse's front leg seems to be very swollen the fetlock joint isn't the sticky outy. Having said that, keep in mind that horses are my life. And I've studied their anatomy Very hard. I'm sure most people would not notice. But i do feel like a stronger hind end would add some balance.
But also, every single piece you ever do is amazing. I'm so jelly!