Lateral Neck Stretch
Try to bring your ear down to your shoulder, and focus on actively reaching down toward the floor with your other hand.
The chin to chest stretch is a great way to stretch the neck extensors and improve your posture.
The wall chest stretch is a great way to open up your chest and stretch your shoulders.
Thread The Needle
Do your best to reach laterally as much as you can with the arm in contact with the ground.