I uploaded the seven drawings from Below Mercury to the Goodreads site today. You can see some (but not all) of the drawings on the Amazon sites, but they aren't at the best resolution and sometimes disappear from the site, for unknown reasons! The Goodreads site is much better for displaying the drawings, and allows more in the way of caption text, so I will add some of that soon.
I am very tempted to put up some of the drawings for Acid Sky as a trailer/teaser. Maybe I will when it's nearly ready to go.