Recently now has two bold cover layouts.

Wraparound
This cover is designed for wide, landscape shots

Front-and-Center
This cover is designed for a pop of color and a centered front photo

Use the Cover Orientation Button to toggle between the two different layouts.

To fine tune the cover cropping, tap on the cover photo on the last screen of the layout process. The cover photo will print exactly as you see it on the preview in the app when you tap Publish.