Start by taking your chin to your chest, then tilt one ear toward your shoulder and start to roll your neck in one direction. Take deep full breathes, and change directions after three breaths.
Take your head back to center, and drop your right ear toward your shoulder. Use your hand to gently guide your head down for a stretch on the left side of your neck. You can tilt your chin slightly up and down to get the stretch in different parts of your neck.