The circular panel uses a depiction of Johannes when recieving his revelation drawn by one of my heroes: Gustave Dore. I used the same pose but changed the source of light, sooo subtle... Ah well, I pondered a long time over which famous prophet the lady could resemble, but the saints i dug up are all not known in popular culture or have famous paintings or poses that are easy to recognize. Johannes from an etching of dore is probably also not the best known, but even without that background that image reads well.