To see a previous version of a take, simply follow these steps:
Select the take that you want to see previous versions of
Swipe to the right or use the arrows until you reach the desired version.
From here you can "Change Background" and "Style Your Video" on the desired version.
Please Note: You can only do Style Your Video on takes that have not been styled yet. If you wish to change the styling or background, go to the original take and re-do the process.