Your cover image is what people see when you share your collection, or it appears in your profile. Your background image won't appear within the app, but will appear if your collection is viewed on a desktop on the web.
To change the cover and background images of your collection:
- Open your collection from the home tab
- Click 'Edit' at the top of the screen
- The cover image will be shown at the top of this screen, and the background image will be lower down.
- Click 'Edit Image' on the image you want to change.
- You can then Take a photo to use, Choose from library (upload from your phone), Choose from Unsplash (select from a royalty-free stock photo library) or Remove it.
- Once you've made your selection, click 'Save' at the top of the screen.
See the screenshot below to see Edit Image button, on the upper right.