Start in the static push up and for a few breaths move your ankles so your entire body moves from the legs and you relax your fist so the fingers and palm feel the tension move through them and allow the arm to align as a total so you are always aligned and relaxed.
Have a partner lie down and place your fist on him or her. Relax your arm and fist so you rest your fist on your partner from the shoulder and match his breath so you breath as one. Allow the fist to change alignment from the shoulder and elbow with his breath and slowly sink as the movement permits without pressing. Feel where there is no density and avoid pushing and tensing yourself. You will need to find your patience for this drill. Later on use this in movement and in the work to allow the strike to come in rather than pressing.
Feel what you have at hand rather than try to mold without feeling.