It's seven o'clock in the morning and I'm just about to leave the house to catch a train to Essex, where I'll be visiting schools, talking to kids about my new book.
But today will be slightly different to my usual school visits, because I won't be alone. I'll be working with Garry Parsons, the illustrator.
While I'm talking and reading from the book, he'll be drawing dragons, gorillas, iguanas, ice creams, ballerinas and more dragons, plus whatever else emerges from his imagination and the imaginations of the children watching us.
Garry illustrated The Dragonsitter, which was published a year ago, and The Dragonsitter Takes Off, which came out last week, and we've done a few events together.
That's a picture that Garry drew on the wall at Kingham Primary School during the Chipping Norton Festival. We've also done a couple of events at the Roald Dahl Museum together, and today and tomorrow we're going to be in Essex, on a mini-tour organised by the Just Imagine Story Centre in Chelmsford.
We've gradually evolving a nice routine. He talks and draws; I talk and read.
Writing is lonely, solitary and terribly slow. You have an idea. You think about it for a long time. Then you spend even longer sitting at your desk, spinning words. Of course I think it's worth explaining this curious process; but any explanation is necessarily a bit detached, and requires a leap of the imagination which can sometimes be difficult for a twitchy kid sitting on the floor of the hall, looking at the sun flooding through the big windows and smelling the lunch bubbling away in the kitchens.
An illustrator's work is far more immediate. Here's a blank piece of paper. Here's a pen. And here - scribble, scribble, scribble - is a gorilla riding a unicycle. Or a grumpy ballerina. Or a big hungry dragon flying through the air.
Talking about writing is like asking someone to believe in magic; whereas drawing a picture is like doing the magic right there in front of them.
I'm not sure what Garry and I were expecting when we decided to do these events together. Slightly to my surprise - and, I suspect, to his too - we've discovered that working together like this, author and illustrator standing side by side, reading and drawing, is the perfect way to introduce children to a book.