Shaped Bokeh Tutorial

I've gone through several tutorials on making bokeh filters but this is the first one that doesn't seem flimsy! >~< I've tried black construction paper, black cardstock, a pringles can, everything, but I never thought to use thin cardboard and duct tape! >~< Duh, lol!! Now I'm going to go and cut up my cereal box! XD

So once I make the heart/hole, I can't change it to a star or something, can I? I'd have to make a completely different filter, correct? Oh well...still cheaper than Bokeh Masters Kit even though theirs is plastic, lol!!