RE: What have you learned??
Fisrt there is a lot of great advice in here. To narrow it down to just one, I would probably have to go with the "Can Call Secret" post. I was just getting ready to throw mine away because sometimes it didn't sound realistic at all (it would stick or hesitate when I flipped it).
I never would have thought to blow through the hole!!
Awesome idea and thanks for catching me before I tossed it!