One rule is to not use complicated techniques unless they are necessary to achieve your goal. First, use simple movements, and if they don't work, then introduce the more complex ones.
Bruce LeeAn instructor should exemplify the things he seeks to teach. It will be of great advantage if you yourself can do all you ask of your students and more.
Bruce LeeThe highest technique is to have no technique. My technique is a result of your technique; my movement is a result of your movement.
Bruce Lee