This is easily my least favorite part of any remodeling project.   Turning those nice sheets of drywall into a finished surface ready for paint is a tedious, messy job.  First you have to put some joint compound down and then embed the paper tape.  Then you have to cover the tape, and the screws with a few coats of compound.  Ohh and unless you’re really good you have to sand it after each coat.   Which puts a nice coat of white dust throughout your entire house.  It sounds easy enough, and doing it for a small area is pretty easy.   Scale it up to a whole room though, and its a pain, particualrly when half of its on the ceiling.