Back cover and spine:
Here's the pencil rough and the inked version, before I added colour digitally:
Edit: And here's the cover for the second book, Big Change for Stuart! Here are all the bits I did, before Alison added the font-based text in InDesign:
Here's the pencil rough, and the next stage where I inked it with a dip-pen and India ink:
I think the triplets on the back cover are my favourite part. Inked and in colour:
Inside the books, you'll find lovely little chapter head illustrations by Temujin Doran. And just for cover contrast, here's a gorgeous new version of the Dutch edition of the same first book, by Emanuel Wiemans: