If you have a rounder face, simply sucking in your cheeks won’t create the definition you want to guide your contouring. Instead, Martin says to do the infamous “duck face,” give a small closed smile, and turn three-quarters of the way to the side so you can see the high part of your cheek in the mirror. “Because round faces tend to be more ‘cheeky,’ doing this enables you to differentiate the high and low parts of the face,” Martin says. “You’ll see exactly what needs to be shaded and what needs highlighter.”