Place your fist or hand on your partner standing up and lean on him. Feel were he tenses up and were he is relaxed throughout the motion and you will learn where and how deep to strike from various positions. Go for the legs, torso, arms, neck and use all the angles you can think of. Check if some leans change the breath phase or alter the speed and depth of it. Use both hands and check were the tension lies between the hands and how it is lead to the ground through the hips and legs. Check which brings him up and gives his form support and which takes away his balance and force unwanted movement on him. Change places and check how you can relax and mininize the force you are using to keep your form under this drill. Don’t stop your breath if you loose your balance and have to move and remember that nothing works all the time. change partners and see how this is learned on another and what you can take from this.