When I ride my horse I always canter. But usually when I ask her to just simply trot she decides to trot really fast, and this usually results in her cantering not trotting. And when she does canter after I have told her to trot the canter is usually really fast and hard to control. I am not sure how I can stop this. I pull her up when I can feel her trying to canter and take off, but she still needs to learn to trot when I tell her to, and to canter when I tell her to do that.