How does a sketch avatar make people look like it?

1. Grasping the characteristics of a model is the so-called "image", first of all, the face. It can be distinguished by 8 squares. "Guo" font. Rectangular face, broad forehead and cheeks, high cheekbones and vigorous chin. "Yong" font. It is similar to the Chinese character "Guo". The face is also rectangular, but the cheeks and chin are wider and flatter than the Chinese character face. "Tian" font. An approximately square round face. "Mu" font. The face is narrow and long, and the facial features are small. An "a" shape. The upper part is wide and the lower part is narrow, and the facial contour is like an "A" shape. It is usually called the oval face. "Shen" shape. The cheekbones are wider and the face is narrower up and down. Round forehead, plump cheeks, high cheekbones, long and pointed chin. "you" glyph. Long face, narrow forehead, wide cheeks and fat chin. In addition, there is an "egg" shaped face. 2. hairstyle. Although hair is not emphasized, it generally occupies a large area of the head. So we can't ignore 3. Eye shape. Divided into phoenix eye, tiger eye and so on. You can also compare whose inner corner and outer corner are higher, whose bottom is the same height, and so on. There is also the shape of the corner of the eye, even thick eyelashes, which are all characteristics of a person. 4. eyebrows. There are also eight eyebrows, sword eyebrows and so on. There is little difference between people with noses, and the most obvious difference is only the difference of races, such as the crooked nose. 5. Mouth shape. Some people have square and thick mouths, while others have thin and flat mouths ... and so on. As long as you pay attention to life at ordinary times, you can draw more and more portraits. In addition, the pursuit of appearance is on the one hand, and it is best to draw the mental outlook of the characters, that is, the so-called "likeness" and "likeness"