Take one of the 2.5" ribbons and measure a 12" tail. Twist the ribbon and add it to the bowmaker. Now make an 8" loop, twist the ribbon and add it to the bow maker then make another loop and trim off another tail that is slightly smaller than your last one.
Next, use another 2.5" ribbon to repeat the same process but make your loops about 1/2" smaller than the last ones.
Repeat the same process, one at a time, with the 1.5" ribbons. Then use the first 1.5" ribbon that you used to come back in and make a small center loop.
Take two pipe cleaners and twist the ends together to make one long pipe cleaner. Remove your bow from the bow maker and use the long pipe cleaner to secure the center of the bow twisting it off at the back.