
standing with arm abducted to 90 degrees, press towel against wall while making clockwise and counterclockwise circles
Stand next to the wall, elevate the arm straight by the side to 90 degree, place a towel between the wall and hand. Push the wall, with maintaing the push make circles using towel in clockwise and anti-clockwise. Repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.