Tin Ceilings...

[empressjad.livejournal.com]

So I've lucked into a mass amount of vintage tin ceiling tiles(?) I saw some stunning art made from these by using "various chemicals, paints, laquers, and glazes" painted over them. That was the description given by the artists, anyway. I've looked everywhere for a link to some photos, but can't find any. What I saw was from American Antique Tin Emporium somewhere in illinois..
Anyone have any ideas that might be a little more specific as to how to achieve this effect?