Your body is bladed towards the target. The striking shoulder lines up on the target. The striking hand starts from a downward position with the palm facing in towards the body. Keep your elbows and arms in close to your body.
Depending on your position in relation to the target, you will start to move your hips back and rock your body back as though you are winding up for the strike. Your striking hand will move upward as you wind up. Keep your hand close to your body.
As your striking hand reaches the top of the rotation, your body should start to move forward launching the strike into the target. Your body should be in a forward position as the strike reaches the target. Drive your body and strike through the target.