Begin in the ready walking stance. In this stance, your hands are in fists in a guard position, and your feet about a shoulder-width apart with one leg behind the other, as though you are taking a medium-size step.
Step 2: Raise the knee of your back leg up to about hip level. The general rule of physics here is that you want your knee to be slightly higher than your intended target.
Step 3: Pull your toes back and extend the leg out toward your target.
Step 4: Draw your leg back so that your knee is back at hip level as it was in Step 2.
Step 5: Set your foot down behind the front leg so that it rests in the same place it was when you began.
Step 6: Execute this kick with speed,thrusting your leg out and back.