Pinch to Close Page
Pinch your fingers together anywhere on the page to close and return to the Storyboard.
Swipe Between Pages
Swipe left or right over a page using one finger to move between the pages of your story while still in edit mode.
Double-Tap to Adjust
Double-tap on any image to immediately enter Crop/Rotate Mode (versus tapping once followed by the Crop/Rotate Mode icon).