Keeping knees facing front, lift top leg about 1 foot, then lower. (health.com)
Holding the remaining top leg, pull it across the front cotton panel to hook into the opposite cloth diaper wing. (diaperjunction.com)
In the first variation, with your back against the wall, you can experience the shape of the pose without having to struggle to keep your balance; in the second variation, you'll focus on the stretch of the torso and top leg in opposite directions. (yogajournal.com)