Paint. After the color of the ground is dry, the first spraying must be symmetrical. The coating can be slightly thinner, the air pressure should be larger and the sector should be larger. Don't spray it too thick, try not to drop the gun, in order to show the luster. According to the actual temperature, spray for the second time and evenly dry in the middle. The second varnish, the second time is basically the same as the first time, but the moving speed of the spray gun is obviously slower, and the paint can be slightly drier than the first time. Third, control the gray point of the background color to a minimum.