HOW: Stand on an elevated surface with one foot off of the edge. Lower the elevated foot by dropping your pelvis. Elevate your pelvis back to being parallel with the ground by using your hip muscles on the outside and back of your hip on the side you're standing on. If you have your hands on your pelvis you may be able to better understand when the side off of the edge is lower and elevated.
FEEL: You will feel the outer hip muscles on the leg you are standing on working with this exercise.
COMPENSATION: Avoid bending your knee to lower the opposite leg. Most of the motion should come from the pelvis with this exercise.