Odd that the link was stripped out! https://www.kickstarter.com/projects/anomalily/a-cats-guide-to-money-illustrated-purrsonal-finance-book
I use Screenflow myself, it works well!
I misread, the photo will always go first, because anything in the message box is text only. If you want to send the photos after the text you need to use separate actions.
That is scary, impressive, not precisely what you’re after, but pretty cool (as long as you can turn it off).