Lay plastic drop cloths on the floor and any furniture or fixtures in the room to protect them from the mess that you'd make during the texture process.
Fill an empty 5-gallon bucket halfway with joint compound and mix in warm water until it is the consistency of thick mashed potatoes. Use an electric drill with a stirring bit to make the mixing job easier.
Insert an extension pole into a paint roller applicator handle. Install a paint roller onto the applicator.
Begin at a corner of the room and apply a moderate coat of joint compound onto the ceiling using the paint roller. Work your way across the room and then to the other end to ensure you do not miss any area of the ceiling.
Install the extension pole into the texture brush. Press the brush against the ceiling evenly and turn it slightly to create the starburst pattern. Work your way around the room in a logical pattern so you apply the pattern to every area of the ceiling. Make your are starbursts next to each other but not touching. If you make a mistake, use the roller loaded with joint compound to smooth it over and try again. Allow the joint compound to dry for at least 24 hours before painting.