Trompe-l’oeil techniques Contouring can be used to beautify and enhance your entire face or as a trompe-l’oeil effect to hide certain flaws. A few examples: To slim down your nose, apply a light colour on its bridge and a dark hue on either side. To make your face seem less long, apply a dark hue on your chin and forehead, and a light colour on the sides of your face. To widen your gaze, brighten the edge of your arches and below your brows. To get full lips, brighten the middle of your lower lip and your Cupid’s bow. To sculpt your cheeks, apply a light hue to your cheekbones and a darker colour below them. To soften a square jaw, apply a dark hue to the lower part of your jaw line. To widen your forehead, apply a light colour to the middle of your forehead and contour it with a darker shade.