The difference between great riders doing dressage
When a great rider does dressage and everyone else, his thinking process is different. - Bill Hoos
He not only thinks about what movement is coming next, he thinks about what aids he's going to apply to get it. Think ahead, know what aids you are going to apply, what the correct answer is. Know what the wrong answer may look like, and how to fix it. Keep thinking ahead, not only to the next movement, but how you're going to get it.