To put wired ribbon on a Christmas tree, you'll need to start by determining the amount of ribbon you need. Then, cut the ribbon into strips that are about 6-8 inches wide and long enough to wrap around the tree several times. You'll also need some floral wire to attach the ribbon to the tree. Start at the top of the tree and work your way down, wrapping the ribbon around the branches and securing it in place with the floral wire. You can also add some ornaments or other decorations to the ribbon to make it look more festive.