Perform each movement and technique perfectly. Pretend that the judges are judging each stance and technique separately. View the form as a series of perfectly performed individual movements.
Relax! Stiff movement looks unnatural and it saps energy.
Perform each movement smoothly, but end it with power and focus. The sequence should be: relax, move smoothly, and end with speed, tension, focus, and power; and then relax and begin the next movement.
Judges cannot watch everything a once. Each one usually has some favorite thing they like to look for. Stances are always one of the things all judges will look at. Low, stable stances with perfect width, depth, and foot position will always impress judges.