These images are screencaps from the anime's DVD version (an extra addition at the end) that's why their quality is slightly worse than this of the scans. I skipped the images I already have here and added only the new ones. The screens were taken by Sirielle to whom I am utterly grateful. ;-)
Sketchbook – from the novel to the anime
A very interesting draft on how the characters evolved from the animator's sketchbook to the version we can see on the screen. Also from the screenshots taken by Sirielle.