Give each sample one question
Label a sample card with the material description, artwork version, and the single thing being explored. A viewer can then tell what changed without guessing from a close-up photo. The card documents an observation; it does not establish a material guarantee.
Preserve the viewing context
Note lighting, surface condition, and camera angle when they could affect interpretation. Those small details make a later comparison more honest and useful. Browse /updates/ for more evidence-aware sample notes.
