Eyeliner can take a basic eye makeup application to a look that refines the shape of your eye. It can be elegant, suttle or sexy, but also harsh. As a general rule the thickness and intensity of the eyliner should correlate with the size of your eye. The larger the eyelid area the thicker the eye liner can be. The smaller the eyelid area the thinner the liner should be. If your eye lid doesn’t show at all, consider using a neutral, deep-shadow to shape your eye. Lining just the bottom line under the eye gives the appearance that the eye is small and bottom heavy, drawing down the face. When using very bold eyeliner colors be sure to just line the top lid.