The traditional way to make a bow from ribbon for a Christmas tree is to start by gathering your materials. You will need a piece of ribbon that is at least three times the length of the desired width of your bow, scissors, and a piece of wire or string. First, cut the ribbon to the desired length, then fold it in half so that the cut ends are on the outside. Next, twist the ribbon at the middle, creating a loop on each side. Finally, tie the wire or string around the middle of the loop to secure the bow in place.