In my daily practice, I dedicate a great deal of time warming up my shoulders
Healthy and flexible shoulders are key for backbending, handstands, arm balances, etc…

This specific sequence is ideal if you are working on flipping the grip

1) Come to a standing position, use a wooden stick, or yoga straps, as you wish. Hands shoulders distance apart from each other
2) Inhale, bring the arms up, lift from under the scapula
3) Exhale, rotate the shoulders backward and lower the hands back down
4) Inhale, bring the arms over your head, try to keep them as straight as possible, core engaged, and tailbone tucked in
5) Exhale, slowly lower the arms back down

Repeat the sequence 5 to 10 times daily