This is a little more complicated as you are engaging two hands but once mastered you can start to add elbow and shoulder strikes once your partner is off balance.
One partner has his right arm extended and left hand touching his wrist, the other partner has one hand on the wrist and one on the elbow of his partner and is in roll back.
Making an anti clockwise circle reverse the position and continue, be careful not to over extend on the press and try not to use force but just relax and feel through the movement.
As in all Sun Style Tui Shou (Push Hands) it is non competitive so you work with your partner for mutual benefit. It is good if you can work with someone more advanced than you as you will learn more in touch and the advice they give.
To add footwork we just step forward three steps on each circle, then three steps back when your partner makes the techniques.
To add elbow and shoulder strikes you need to seek tuition from a teacher as these are potentially dangerous techniques and need supervision.