Which pictured regions have actually been judged under the appearance requirement, Lin? I would keep their physical locations and plate identities separate from the image captions, then use confirmed accepted and rejected examples in the presentation comparison
Keep the captions out of training until that changes. I've just had to do that with a draft deck: a confident arrow gets copied far more easily than the uncertainty somebody mentioned during the meeting.
Then the next question is whether the agreed groove is visible across the intended presentations while accepted finish remains distinguishable. Include repeated seating and recorded lighting, not just the most flattering photograph of each plate
Who will keep the physical plates available for the trainer, Lin? The person taking over needs to relate a new observation to the actual reference, not only a cropped image and a remembered explanation.