In working on shoulder flexion, scapular control, and thoracic extension, once you feel comfortable with band-assisted shoulder circles, elevated cat pose, and inverted cat pose, to further challenge yourself and improve your mobility, you might try these shoulder flexion pulses while in different stages of a wall-assisted handstand.
The idea is to stabilize your shoulders in different stages of an assisted handstand, retract your scapulae, and create more shoulder flexion and thoracic extension by slowly pulsing your trunk toward the wall.
You definitely want to build up to this exercise by mastering earlier fundamentals of shoulder and spinal mobility – please feel free to work your way through the progressions under these categories at the following pages:
Shoulder Mobility Progressions
Spinal Mobility Progressions
If wrist issues don’t allow you to put substantial pressure on your hands for this and other exercises like conventional push-ups, I would suggest working at a wrist mobility routine for several months – you can find one here:
Wrist Mobility Routine
For an overview of exercise progressions that you can work at to improve your mobility and balance in a systematic way, please feel free to visit our Mobility Exercise Progressions page here:
Mobility Exercise Progressions
For some suggestions on how to set up a simple workout area at home, please feel free to view:
Suggested Resources for a Home Gym