What is the most logical next event?

How to sponge paint a bathroom
Apply painter's tape to the ceiling where it meets the wall, the doorjambs, wood trim and any areas where the walls of the bathroom meet the tile.
This will protect these areas from the paint and help make cleanup easier.
Pour some of the paint in the base color, or color that will be behind the sponged paint, into a paint tray.
Dip a paint roller into the paint and roll the base color onto the bathroom walls. Use a paintbrush to apply the paint to the edges of the room.