Remove the shutters from the house if possible
Clean the shutters thoroughly with soap and water
Rinse and let the shutters dry completely
Remove loose paint and sand the surface
Repair any cracks, holes, or damage
Tape off any areas you do not want painted
Apply a primer suitable for the shutter material
Let the primer dry fully
Apply the first coat of exterior paint with a brush, roller, or sprayer
Let the first coat dry completely
Apply a second coat if needed
Let the final coat cure fully
Reinstall the shutters after the paint has dried