
stand facing wall, push through straight arm on pillow to protract scapula, hold, then release and repeat
stand facing the wall, raise the one arm to 90 degree and rest the hand on the wall keeping the elbow straight, place one pillow between the hand and wall. Push the wall, try to round the shoulder and hold. Release the push and back to starting position and repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.