How to Designate a Primary Photo
The primary image for a listing is outlined in blue, with the flag icon selected and the label "Primary Image". To change the primary photo, click the flag icon on the desired photo.
How to Rearrange Photos:
The number in the upper left corner of each photo indicates the order in which it appears on the listing. To rearrange photos, click on a photo and drag it to a new position.
Alternatively, you can click the drop-down arrow next to the number in the upper left corner of a photo, then choose a position number.