Highlights are bright and contours are dark. Use bronzer or darker eyeshadows (in the crease) to create depth or contour, and use illuminators, highlighting pencils, etc. to brighten up the face for the highlight areas. It will make a huge difference!
Eye Makeup: this is the best video I have watched on how to contour your face, and she only ues highlighter,bronzer, and blush and actually tells you how to do it so it looks natural.I've watched so many contouring videos so you will love this one.