How do I apply primer?

You begin by thoroughly cleaning the surface to be primed. Make sure you remove any dust, dirt, or grime that may be present, as these may affect the adhesion of the primer. After that, you simply brush it onto the surface as evenly as possible. After that, just allow your work to dry. Before you apply the topcoat, you should inspect the primer coat for any marks or streaks that need to be sanded.