HOW: Get your foot set-up and supported on an elevated surface while balancing on the other leg. To perform the mobilization, bring your knee and shin bone forward over your toes while keeping your heel down on the ground. While driving the knee forward, also attempt to drive the knee slightly outward towards you pinky toe.
FEEL: You should feel a stretch in your calf and your ankle.
COMPENSATION: Keep your entire heel flat on the ground as best as you can