Lie on your side.
Support your weight on your forearm with your elbow just below your shoulder and your toes pulled towards you.
Place the hand of your other arm on your side.
Lift your body up and take weight on your elbow and feet.
Pull your knee of your upper leg towards your chest at 90 degrees in your hip and knee.
Make sure you tuck in your navel and pull your shoulder blades back and down towards your buttocks.
Make sure your pelvis does not rotate inwards or backwards.