When painting with a spray gun, it is very important to correctly determine the distance of the gun nozzle from the painted surface. This distance ensures that the paint is applied evenly. If there are streaks on the painted surface, it means, nozzle is too close. When it's too far away, separate lumps of already dried paint will form on the surface. They will create a kind of rough surface. Let's remember, that this distance depends primarily on the type of paint – its stickiness.