I have to say, I like this one quite a lot because you do see a great expression in the girl's face as she looks at the Horse.
This was and is an oldie, still from the 2014 show so I think if I had done it today, it could been little better.

When doing photowork like this, I always tend to have focal point on the Horses and Very very rarely on riders or grooms. Fur me The Horse is most important so it should be focal point. I know many won't agree, and definately riders or grooms with huge egos, but we all want different things in photowork.
This is my style.