your instructions on how to fold this are very unclear to me. is there some sort of diagram or image to help me?
ah, sorry about that. Let's see: this video is a good visual.
https://www.youtube.com/watch?v=3oEKb1YJoiI
when you have your original sheet, fold in half, so the text is all facing out. then fold in half (this gets you the "spine" crease.
then create a gate fold, bring the the flaps to the center