Take the EZ Bow Maker and start with one of your 2.5" ribbons. Measure a 13" tail and then make 4 7" loops. Measure another 13" tail and then trim ribbon from spool.
Next, use the second 2.5" ribbon and repeat the same process making 2 loops that are slightly smaller than the last ones. Add one extra tail to the bow maker.
Continue on with the 4 1.5" ribbons making 4 loops of the first ribbon, 2 loops of the second and third, and 1 loop of the final 1.5" ribbon.
Take 2 pipe cleaners and attach their ends together to make one long pipe cleaner. Remove the bow from the bow maker and use the long pipe cleaner to secure the center of your bow.