The Oxford dictionary defines to collaborate as: to work jointly esp. in a literary or artistic production. to cooperate traitorously with the enemy. Perhaps it’s this sinister connotation that publishers have in mind when they try to keep authors and illustrators apart (in case the author and illustrator start collaborating against them). But don’t be put off – there’s something very positive about working with your illustrator. Jude Daly and I have collaborated for many years. I claim her as one claims my agent and my publisher – mine even though she works for others. Since we both grew up...