Snails have long appealed to cartoonists (Sam Gross’s “I don’t care if she is a tape dispenser. I love her.” remains an all-time favorite gag). And also to me—as a kid, I had a pet snail named Milo ...

Acclaimed Irish artist Alan Nolan has illustrated best-sellers like Gordon's Game, Fintan's Fifteen and the Sam Hannigan books - now he's keeping kids at home busy with his fun step-by-step drawing ...