HOW: Get set-up sitting with your knees bent, feet supported, and a band around your feet. The closer the band is towards your toes, the harder it will be. Perform concentric and eccentric eversion by pointing your feet out and in, think of a windshield wiper motion.
FEEL: You should feel the muscles on the outside of your calf working.
COMPENSATION: Try to limit motion to your ankle versus your knee and hip.