How to create a format that places photos one behind each other so that when you send it via text message it's similar to a booklet that you swish with your finger from page to page.
That would be a neat feature! Unfortunately, SMS/MMS isn't sophisticated so all it can do is send standard image files sequentially. It's possible a specific chat service like iMessage or WhatsApp or Facebook Messenger could add "image books" as a feature, but they'd have to design and code it specifically and it would only work if everyone was using the same version of the same app.