Gather drywall tape, joint compound, taping knives, mud pan, sanding sponge, and primer
Ensure drywall sheets are securely fastened and screw heads are slightly recessed
Fill gaps, dents, and screw holes with joint compound
Apply a thin coat of joint compound over seams
Embed drywall tape into the wet compound
Press the tape flat with a taping knife to remove air bubbles and excess mud
Cover the tape with a thin layer of joint compound
Apply compound over inside and outside corners as needed
Let the first coat dry completely
Apply a second coat of joint compound wider than the first
Feather the edges smoothly with a taping knife
Let the second coat dry completely
Apply a third finishing coat if needed
Sand the dried compound lightly until smooth
Remove dust from the surface
Prime the repaired drywall before painting