The best way to decorate your Christmas living room is to start with a few basic items and then add your own personal touch. You can start by hanging up a few decorations like lights or garland, then add some ornaments to a Christmas tree, and finally finish it off with a few festive pillows or blankets. You can also add a few touches like stockings or wreaths to really bring the Christmas spirit to life. The key is to keep the room cozy and inviting, so don't forget to include plenty of pillows and throws to make it feel extra cozy and welcoming.