Write the next sentence in the following story.

How to decorate a storage box
Wash the surface with mild soap and water.
Paint adheres best to clean surfaces. Wipe the box down with warm water mixed with a few drops of mild dish soap, then rinse it thoroughly.
You can dry the box with a towel or let it air-dry-just make sure the surface is completely dry before proceeding. Lay down newspaper or plastic to protect your work surface.