Electrical Wall Outlets Video
Your project includes drywall and openings for electrical outlets and switches. To make a professional looking job, the ears on the electrical switch or outlet has to be flush with the drywall.
To create this nice tight fit, be sure to blow any dust or debris from the outlet box. Do not make the mistake of just applying drywall mud with a drywall knife. The mud does not have a good support base with this method. A preferred method is to apply some mud between the box and the drywall. Tap it back into the opening. Get the joint compound contacting the plastic box. Then, make your final pass with the drywall knife. This provides a good solid bond for the box. And creates that flat mounting area for the switch or outlet plate.