When making a drop shot, the stance you should use depends on the situation and your playing style. Generally, it is best to adopt a slightly open stance, with your feet shoulder-width apart and slightly angled towards the net. This allows you to generate power while keeping control of your shot. You should also lower your center of gravity by bending your knees, and keeping them flexed as you make contact with the ball. Finally, keep your weight forward over the balls of your feet to help create more spin on the shot, which allows it to stay low when it crosses over the net.