Once you've paid for your book, you can click the Reorder Pages button in the top right corner of the screen.
This will take you to the Reorder Pages Editor where you can click and drag the images to reorder the pages to your liking.
When you have finished, click Reorder in the bottom right corner. You will then get a prompt that asks you to confirm the reorder as well as a checkbox for if you would also like to reorder page copy/text to match new image order (this means that the story text will move with the image. In most cases, you DO want to select this checkbox)
