Power. Move smoothly and deliberately, but execute the technique with maximum power and body tension. A form is a self-defense scenario against imaginary opponents. Therefore, your movements better be effective. Strong kicks, punches and blocks are essential. It is better to have a strong low kick rather than a weak high kick. Do not give up power for flash. There is no reason to save yourself for later. Let it all out, while remaining in control, and really show you have the power to make each punch and kick count.
Balance. Stumbling during a pattern is a major error. Demonstrate good balance and show that you are in control during the entire routine.
Symmetry. Symmetry defined is beauty of form arising from balanced proportions. Symmetry in patterns refers to your general form. Patterns are very specific about how arms and legs are positioned in relation to the body. The blocking arm usual extend from the line of the body at a 45 degree angle. Punches are usually at a 90 degree angle from the line of the body. Almost everything is squared off at 45 and 90 degree angles. Pay close attention to you symmetry.
Do not lose your concentration if you make a mistake. Nobody is perfect. Some days are good days and some we try to forget. If you make a mistake keep going. Show the judges the rest of the things you can do well.
Be quick but do not hurry. Make the technique quick (unless a slow movement is required) and powerful, but do not rush through the pattern.
Do not be discouraged if you have to start over. Just bow to the judges and ask if you can start over. Give your second try all the enthusiasm and effort of your first try and you may still win the gold!
Your competitors are your peers. You are competing against people of your same age and belt level. Your competitors are people just like you with a similar experience level. They are nervous too!