1. Base out the entire eye lid with a white eye shadow like MAC Eye Shadow in Gesso ($15; maccosmetics.com).
2. Using MAC Fluidline in Blacktrack ($16; maccosmetics.com) and a small eyeliner brush like MAC #210 ($20; maccosmetics.com), lightly sketch a thin black line through the crease.
3. Clean up and adjust symmetry with a cotton bud, then darken and thicken the line using the before-mentioned products.Read MoreLess