When you get to the show, judges are amused by handlers who walk in an artificial gait - rigid long strides. Walk normally, same when the horse trots. Smile, if you should make eye contact with the judge. He/she is not the gestapo and they like to know you enjoy what you are doing. One huge mistake I see is horses that stand with the head bent toward the handler. This often happens because of the short hold on the lead shank. Don't be afraid to extend your arm or move in a little closer. I was announcing a class from a vantage point and out of 10 horses, 9 were bent. The little gal who's pony was straight, took the ribbon. The judge later told me that was what decided the class.