I sort of feel like I don't have control at shows. Not phsycially, of my horse (although a few times in the past I haven't, but not now) but mentally. At home, I get to decide when to walk, trot, canter, circle, change direction, etc, and I can do it when my horse feels 'right.' At a show, there's someone else (judge/announcer) telling me what to do when, and also sometimes I feel that we aren't allowed to stay in one gait long enough to get settled in. This, combined with my nerves, and a little of being in a new environment with new horses, I believe is my problem. How to fix it? I have no idea.
I will say that I remain pretty focused at shows, but my confidence level plummets as my nerves increase.