Start with a good quality ribbon. I prefer to work with a wired-edge ribbon but that isn't necessary.
Cut a length of florist's wire approximately 12 inches in length and place between the dowels.
Leave about an 8" tail on one side of the ribbon. Place ribbon between dowels pinching and twisting at the center point.
Make a loop to the 5" mark, turn the ribbon back toward the center, pinching and twisting at the dowels. Continue doing this 6 times total on each side.
After you have 6 loops on each side make a 1 to 1.5" small loop for the center of the ribbon.
Push the ribbon tightly down between the dowels, grab your wire and loop tightly around the top of the ribbon.
Slide the bow out from between the dowels and secure the wire around the back of the bow.
Start fluffing each loop until your bow is to your liking.