you cant edit the order, you will have to get it after the fact. i just added apple care over the phone. once you get your watch, call 800-275-2273. once you speak to the rep, they will email you a link to purchase applecare. once you pay via the link, its done and it will reflect so in your support profile. just dont wait too long or they may ask you to go into the store to inspect it or run a diagnostic. since my watch delivered 2 days ago, they took my word over the phone since it was literally brand new.