This is what I have been doing. I also recently bought instructions from Green house Butterflies but haven't had time to try them yet. Look at photos.
This is the finished hairbow
This is what I do. I drill a hole in both end of the bottlecap. Next I use the smallest ribbon I find at Walmart in the rolls. I cut this on an angle. Next I push it through with a toothpick because they are on my craft table but it works. Next I light the ends of the ribbon and wrap around the clip. I almost forgot on the back of the bottlecap I also put hot glue where the ribbon threads through. I hope this makes since. Email me any questions you may have.