Step 1:
Keep ball located right behind your head so its difficult for your defender to get a hold of it. Locate your target and get ready to throw
Shoulder Girdle - Your left and right shoulders are both in abduction supernating with internal rotation about 100-115 degrees vertically. Your pectoralis Major is also contracting concentrically.
Elbow - Your left and right elbow joints are both in abduction in flexion 95 degrees over your head. Your biceps Brachii is contracting eccentrically while your triceps are contracting concentrically.
Wrist - Both wrists, hands, fingers and thumbs are in flexion with the Flexor Digitorum superficialis with the flexor pollicis longus contracting concentrically. Both wrists are eccentrically contracting their flexor carpi radialis