You won't regret it
I had Avery tell me all about what she thinks a day with her new twin brother and sister would be like and then I plugged it into this generator with some cute images of Avery and her sister Mack. It couldn't be more adorable, in my un-biased opinion. (the second page is blank, on purpose for printing purposes)
Fill out the prompt in the Storybook creator. You can include as much or as little detail as you want. You can just submit a family photo instead of doing 4 separate photos, you don't need to fill every box in.