5. The real secret to a successful smoky eye? A fuller lash line. Which, thankfully, you can happily fake with a dark brown eyeshadow. Using a small, thin flat brush and starting at the outer corner of the eye and moving inwards, press the dark brown eyeshadow into the upper lash line and gently sweep back and forth. Build with more eyeshadow as necessary. To tackle the lower lash line, do the same, but only line the outer half, and meet your upper line. If at any point you find flecks of eyeshadow have fallen astray, just remove with a cotton swab.