
standing arm at 90 degrees flexion, press towel against wall while making clockwise and counterclockwise circles
Stand facing the wall, elevate the arm forward to 90 degrees on wall, place a towel between the wall and hand. Push the wall, maintaing the push make circles using the towel in clockwise and anti-clockwise. Repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.