When painting a room at home, the area should always be cleaned first and defects should be repaired (such as gaps or cracks in the walls). The ceiling should also be painted first to avoid drips on the walls. Hire a home service pro to help save you time and trouble.
Basil did a great job. I had flaking stucco ceilings. He sanded, skimmed with plaster and painted. I now have beautiful white, flat ceilings. I would highly recommend. He is clean, tidy and does a great job.