[header] How to hide wall flaws with textured paint [title] Clean the surface. [step] Before applying any paint to a damaged wall, you need to clean the surface. If you don't clean the surface, your paint job won't be as effective as you want it to be. 
In the end, you might create textures you don't want to create. Clean by : [substeps] Removing any dust, pet hair, or other grime from the surface.