The top of a Christmas tree is often decorated with a star or an angel, but bows can also be used to add a festive touch to the tree. To make a bow for the top of a Christmas tree, you will need a ribbon in a festive color, a pair of scissors, and a hot glue gun. First, cut a piece of ribbon that is long enough to fit around the top of the tree. Then, fold the ribbon in half, and use the hot glue gun to attach it to the top of the tree. Finally, tie a bow with the ribbon, and adjust the size as needed.