Application of a concealer: Apply a concealer as needed onto your face and using gentle strokes, spread it to cover any skin imperfections or under your eyes to cover dark circles. Application of a highlighter: Apply a highlighter under your eye arches and under the bottom eyelash line. You can also apply a highlighter onto your eyelids to add a sparkle to your look and into both the inner and the outer corners of your eyes to make your eyes brighter and appear bigger.