You made it to a show. You are nervous. Your horse has pointier ears and wider eyes than normal. You are trying not to forget your pattern, test, or course. That’s a lot to think about.
Instead of freaking yourself out, you could channel your energy into touching up your horse so that you can be seen from space (in a good way). This allows you to focus on something in the moment and gives you a boost of confidence knowing that your horse will really stand out in the crowd. Again, in a good way.