The brown(darker shade) is to sculpt/contour, it's very easy to over do it but it blends nicely with a light hand. make sure you aren't taking the brush right from the product onto your face, tap it to shake off excess. the lighter shade is to highlight(cheekbones/brows/wherever you would like to highlight) again, very easy to overdo it. it's a little warm toned but it looks more "natural" than a lot of contouring products I have seen. remember!!! start out light as possible,you can always build!