The trick with Design Proofer is that all of the spreads need to be the exact same size and you need to have a front cover and a back cover that are exactly half the width of the spreads. That way, Proofer has all the files that it needs to display the flip book so it looks like a real book. If you are exporting from Album Builder, your export will automatically include two properly sized blank cover pages (for front and back).
Editing Your Upload
Add a cover to your album to create a flip book. Simply select "Create Faux Cover" from the Edit Revision tab.
**The flip book feature requires a front and back cover for your other spreads to stay in the correct dimension.
You have the options to use a swatch of black or brown leather, or you can use the color picker to create a cover. Once you make your selection, click Save Cover. Then select Save to save all changes
This is not recommended for Fundy Designer export, as a properly sized front and back cover will be automatically generated when you export for Proofer.