1. Find the screw behind the mirror, which can be tightened above and loosened below.

2. Loosen the screw on it with a screwdriver, so that the bottom of the mirror protrudes a little forward and tilts at a certain angle, so that when you look in the mirror, it will be thin and your legs will be long.

3. After adjusting to the angle you want, tighten the fixing screw.