I do mine similar to this: How To Make Boutique Hair Bow--4--Lining Hair Clips : Hip Girl Boutique!, Hair Bows, Baby Hair Clips, Rockabilly Hair Accessories and more.
except I start the opposite way. I shove my ribbon into the clip, close it, flip it over, dab hot glue on the top of the clip (you will be getting glue on the underside of your ribbon too), then lay the right side on top. Make sense? probably not. Then I just glue the rest around to the back.