Remove as much furniture from the room as possible.
Cover the walls, floor and any remaining furniture with plastic tarps, held in place with masking tape.
Apply a coat of drywall primer to the ceiling with a paint roller on a pole. This will help the drywall mud adhere. Allow the primer to dry for the time recommended on the can.
Mix powdered drywall mud with water in a 5-gallon bucket, following the instructions on the package. A thicker mixture will give a more defined stucco finish.
Roll a 1/8-inch layer of drywall mud onto the ceiling with a paint roller. If desired, use a trowel along the borders for more control.
Place a crow's foot brush on an extension pole and lightly hit it into the drywall mud, twisting it with each impact. This will create a stucco texture each time the brush pulls away from the mud. Allow the drywall mud to completely dry.
Prime and paint the ceiling as desired.