To dress a Christmas tree, you will need the following items: a Christmas tree (obviously), ornaments, lights, garland, and tinsel. Start by placing the tree in its designated spot and securing it so it doesn't fall over. Next, wrap the garland around the tree, starting at the top and working your way down. Then, hang the ornaments, starting with the larger ones and working your way down to the smaller ones. Finally, add the lights and tinsel to give the tree that extra sparkle. Voila! You have a beautifully dressed Christmas tree!