To texture the walls and ceiling of an average room ... a high-quality primer applied with a 3/8-in. nap paint roller. On the first coat, avoid going over surfaces before they're completely ...

2. Skim coat (shown in the video above) Apply a thin layer of drywall joint compound to the wall using a paint roller or texture sprayer and "skim" or scrape it off with a drywall or putty knife.