It takes a bit of practice to do the final fold, so do some practice ones first. You can find videos online by googling something like, "How to fold a puzzle purse." in case you need help beyond my written instructions and photo.
Check out my Valentine section for two more puzzle purses that are more geared for adults.
Here is my Etsy listing. https://www.etsy.com/listing/176332965/valentines-for-kids-student-teachers?ref=shop_home_active_5