Use the same spreadsheet you import into the app, so #12 here is #12 in the app, on the sticker and on the card page. A card with an auction start and no claim price shows "Auction". Slabs and sealed items take one photo: a Photos column of 1, or a condition or name that says PSA, BGS, CGC, graded, sealed, box, tin or pack. Photos named like 12-front.jpg and 12-back.jpg go on card #12; other photos go on the cards in list order. Photos and the list stay in this browser only and never leave your device.