Second (and maybe last) batch of pics...
One of the things that I had to decide very early was the level of detail of the insert illustration: the scene included many different elements, but my scanner can only take A4, so I couldn't afford painting on large sheets of paper. Even character faces would be very, very small on that kind of format, so I decided to use a hybrid system: using most of the A4 height for the bodies, and making separate (bigger and more detailed) heads, then putting them together with Photoshop. It worked pretty well, 'cause it's very difficult to notice the variation in the thickness of the ink lines (and I've made sure to draw them a bit thicker, on purpose).
All the backgrounds are separate elements, too - the floor being the only one bigger than A4 (so I had to take it to a printing service to make a scan).
And finally, here's a couple of ink-only scans of the postcard illustration. I've used brown ink for some of the details, but that wasn't very wise... I'd suggest NOT to use it if you want to paint watercolours over that - only black indian ink is waterproof, any other colour will smudge. I've learned the hard way.
