What happens next?

How to paint a wall
Remove all accessories from the wall.
Locate any knobs, outlet covers, light switch faceplates, thermostats and other items along the wall and take them off. Starting with a smooth surface with no obstructions will help the project proceed much more efficiently.
Most accents can simply be unscrewed and lifted off. Be sure to keep track of small pieces like faceplates and separator, and put the screws back where they belong.