you can however send a message to the person with a picture in that message, you are very much so allowed to do that, if not in a message on here in the message exchange email addies and send it to their email or on your fb pics and have them check it out on your fb page....just a few suggestions, i would like to see it closer as well, make a fb file anyone can see, give them your id and after the auction is won delete the pic but you can keep the album for when you have more auctions, thats what I would do.
wow seeing that you have several auctions running i think your best bet would be to put the rest of your account on friends or friends of friends but the photo album marked open to public/everyone can see and put clearer pics add the auction title or number wtih each pic...good way to boost your business....just a suggestion but it would solve your problem. hope to see more of you soon!!!