 And updating a mantel is a pretty simple do-it-yourself project. If you can operate a miter saw with confidence, you're good to go. With all the ready-made decorative moldings available, finding a few to put together with plywood is a snap. Just remember, this thing is going to be above a fireplace, which means it needs to be fire safe. Mantels are an important design element that can noticeably improve the look of the room. It's just what the lord and lady of the manor deserve. That, and maybe front row tickets to Motley Crue.