Still negotiating ideas. I think I've got my visual concept down - even though I'm not doing the equal-parts-grandeur-and-menace interiors, I can still take that sort of approach to the exteriors. I want to incorporate some of my own personal sense of whimsy and see if I can balance it with a sense of foreboding and aggression.
I have also started forcing myself to work within compositional boundaries rather than just drawing freely, which I think has resulted in creating scenes rather than isolated elements and has vastly increased the quality. They're still very, very loose, but hopefully they're readable.