How to iron a suit and trousers?

The collar should be flat inside and outside, and the collar should be covered with seams to form a natural shape after being turned over, and the left and right sides of the collar should not be crushed to form a natural separation; The left and right shoulders are naturally formed, the shoulder pads are ironed, and there is no tortuous feeling at the seams with the sleeves; The front chest and back are naturally flat, leaving no button prints; The pocket surface does not leave a lid mark; The sleeves are ironed into a circle, the cuffs are welted plain, the buttons are straight and neat, and the back seam of the sleeves is ironed straight from 10 cm from the cuffs; The lining of clothes is kept flat and does not leave wrinkles; The whole garment looks natural and plain without leaving any wrinkles. Clothes have no aurora.
The surface of the whole pants is flat, with clear hot marks and no bag prints; A large placket in front of the pants should be naturally connected to the middle line of the iron stain on the trousers and be vertical; the four hot stains in the front and back are naturally vertical and crisp; the trouser hem is flat and without twists; The back pocket lid does not leave a seal.