The first thing you want to do is slide the button onto the short end of your bobby pin and hold the bobby pin like this. Figure out how you want the button to lay on the pin and then return to this position.
While holding your bobby pin as above, shoot some hot glue on the side where your pin will lie and press it down, holding for a few seconds so it sets. I am a crazy gluer, so I also filled the rest of the button with glue, just to be safe!
And yeah, that's all you've got to do! I made two sets in about five minutes and they are just too cute!
I will be making a ton more of these suckers, especially now that I know how simple the process is. I'm now on the hunt for some super cute fabrics to use!