Yes it's leather and the change area is on the back of the wallet. It has a zipper. Lol....this might sound silly, but I've tried to add photos and it always seems to open a new auction.
To add pictures, you use the edit button and then upload more pics and then save changes. Just click on your current auction and you will see the edit button at the top. Be sure to scroll down and save or it will not keep them. I like your auctions. You will get the hang of things!