Sub-white aluminum-plastic door with a white aluminum side, how? The effect is good?
The easiest way is to directly on the white aluminum-plastic plate directly attached to a layer of black aluminum plate. Since you have done aluminum-plastic board layer, that grass-roots flatness should not be a problem! We often do shop strokes, spray paint with the car, will not fall, the premise is to clean up the original level, remember that is spray, not brush.