As a horse person, I don't love the first and 3rd shot. The cropping of the horse is not appealing to my eye. I would have liked to see more of the horse (you almost want to...match the amount of body between horse and person, even possibly to the front legs. Right now I feel it looks like the horse head is just floating.
The rest of the shots are more pleasing to my eye.
This can be a bit more of an attractive angle (don't mind this picture, I had to rely on my very non photography mom to take it. We were euthanizing my mare the next week and I needed to get pictures of us together)