Before making clothes, you need to make a model, that is, a sample. A good pattern can make the garment fit better, because the proofing is based on the proportion of the human body. Mainly chest circumference, waist circumference and hip circumference. Knowing the circumference of the human body and adding a certain amount of relaxation according to the style of clothes will form a series of data. According to these data, according to certain rules, we can draw the clothing structure diagram.