Whether you've decided to be Maleficent or Kim Kardashian this Halloween, you'll need to be a master of extreme contouring. Apply white grease-based makeup like Flash Color Pot in White ($19) to outline the cheekbones, chin, nose, and brows (similar to how you would use highlighter).
Theatre makeup #5 Wicked witch inspired makeup, dark green smokey shadow around the eyes and dragged down the inside of the nose, and around the brows, blown out effect on the cheeks carrying the dark greens through the cheeks on to the head. Solid black lip. Slight shimmer.