Edit/Change Collection in Spark Theme

1. Open the theme editor by clicking "Customize

2. Scroll down to the collection you want to edit

3. Click on the collection you want to edit in the left side list.

4. Click the image and "Change".

5. Click "Select from library"

6. Click "Add images" and upload the new image.

7. Click "Done".

8. Click the "Link" field and update the collection if necessary.

9. Click the "Title" field and update the title if necessary.

10. Click the "Description" field and update if necessary.

11. Click "Save"