To get a clean finish like this one, it’s important to prepare your painting surface properly. After you’ve cleaned up and are preparing to paint, it’s a great idea to fill any holes or cracks to ensure the smoothest paint job possible.
It's easy to find and fill any large cracks and holes with sealant or filler, but it may be harder to locate small cracks that could cause headaches later on. Simply shine a torch over the surface and circle any problem areas in pencil. Squeeze a small amount of a sealant over the crack and mould with a moist finger.