Did you have them scan the QR code in the
Disneyland app or your ticket, or did you collect PhotoPass cards?
If they scanned your QR code or ticket, the photos should be in your account on the Disneyland app. On the main account screen, scroll down to "My Photos" and you should see them sorted by date and meet-and-greet.
If you collected Photopass cards, you'll need to link them to your account (because you paid for the MaxPass/PhotoPass combo with it). Same main account screen as above, click on the "Link PhotoPass" icon, then at the bottom of that next screen, "Link Photo, Card, or Purchase." That should bring them up, although it might take a few minutes after you link the cards for them to show up in the app.
Once you're sure the photos are there, you can add borders/stickers within the app by clicking on each photo individually, then save/share each one (what DD15 did to share on Instagram that day). For the whole batch of photos, it's easiest to get onto a computer, go to the PhotoPass area of the Disneyland website, and then download them all at once.
PHXscuba