Need help with my training

I need help trying to get my arm/shoulder flexible in order to have it pulled back(?) as shown in the picture. I started baseball at 17 years old but I hope I can train my arm for the flexibility. I have a copy of the Tuff Cuff so if it is in the manual I would appreciate it if somebody could help me find it. Thanks in advance!

Focus on scap work - those exercises that promote pulling the shoulder back as opposed to rolling them forward.

The exercises on page 40 to 42 on the TuffCuff, right? Thank you very much! :smiley: