Crown mouldings look excellent when you prepare, caulk and clean all the seams between the ceilings, walls and corners
Use high-quality caulking so seams don't open up and turn yellow later in the year.
NOTE: Gluing the joints is also important. Joints will expand and contract at different times of the season. If the carpenter doesn't glue the joints, they could open up during winter months when the humidity is dryer.
