Beginner: Lateral Angle is a great posture for developing strength in your ankles and leg muscles. If it is difficult to bring your hand all the way to the floor, keep your elbow resting on the thigh - but try not to lean to heavily on the thigh; instead, keep lifting from your core by squeezing your abdominal muscles. Once you feel comfortable here, try it with your hand on the floor or on a block for support. Remember to keep your knee directly above your ankle to avoid pressure on this delicate joint.
Advanced: Now that your hand is planted firmly on the ground, focus on shifting the weight to be evenly spead between your hand and your two feet. Can you push out from each section of your back foot while you push down into your front foot and hand? Squeeze your legs towards one another to relieve pressure from the ankle joints. Reach with your top arm, chin tucked into armpit, gaze lifted. Feel one smooth line of energy from the tips of your top fingers all the way down to the edge of your back foot.