How to use highlight shadows?

First of all, you have to understand what highlights and shadows are for. High-light shadow uses the optical principle to manipulate people's faces, making your face look small and exquisite, taking pictures better and going out more beautifully. First, generally speaking, highlights should be played on the nose and collarbone, which makes people more energetic. Second, highlight the center of your face to make your facial features more stereoscopic. Third, try not to. This will make the highlight shadow more perfect.