I got the inspiration to create these pieces when I was browsing through some beading blog on the internet (Sorry to say, but I can't recall which ones :\ ).
Basically the idea was to incorporate Tila beads, and use them as the focal point of the design.
So, why didn't I glue on the hair clip before attaching the backing?
Believe me, I really wanted to and tried. The problem I had was to measure out exactly where I would have to cut out holes and how big they had to be... It was just too much unnecessary headache which I wanted to go around.