"When painting a full room in your house, it's best to first paint the ceilings using a flat paint, then the walls using an eggshell paint, and end with the trim using a semi-gloss paint," says David Steckel, Thumbtack home expert. "Make sure to repair any dents or damage on the trim before getting started. Use either plaster or wood filler, then don't forget to sand and smooth the area."
While Steckel says that painter's tape isn't always necessary, it can be helpful, especially if you're unsure about the steadiness of your hand. When painting the baseboard, for example, you can apply tape along both the edge of the wall and the floor to ensure a clean line.
If you're hiring a pro for the job, keep in mind that intricate details could make the project more expensive. "Baseboards, casings, crown moldings, wainscoting, windows, and rails all require extra time to be painted, which in turn will increase interior painting spend," he explains. "Painters will charge for additional tape, contrast or matching paint, and materials needed to paint extra trim." But for a stylish effect you'll want to live with for years, the project may be well worth the extra effort or expense.