Teach to Learn
Start Teaching even if you're only 10yrs old: Be an apprentice to your teacher with younger beginner level kids. If you practice the art of constructive critique on others you soon realize you have trained your eye to be able to more acutely critique yourself. Be honest in your evaluations. As a teacher you want to offer a challenge but in an encouraging way that fits the level of the students. Then when you practice in front of the mirror you will remember it is a time for learning and growing not for admiring. Learn to praise your progress not your image. Teach your students and yourself to build the skills of memorization, consistency and body awareness in both movement and placement.