You wouldn't know it by looking at those taupe and beige shades in your makeup palette, but they're actually the secret to a perfectly defined face. The right neutral tones can bring out your eyes, sculpt your nose and chisel your cheekbones. "Contouring with dark and light colors creates the best version of yourself," says makeup artist Linda Hay. Still, it takes some artistry to master the technique. Here, Hay gives us a lesson in contouring 101 for a gorgeous effect.