I’ve started my fourth book and at the moment I’m thinking it will be my first without rhyme. But I’m finding it much harder to write than the others. When you write a rhyming couplet you pretty much know if it works (it rhymes, it scans), or not. It’s much harder to judge whether a line of prose is working. There is an awful lot of uninspiring prose writing for young children already (we know, we’ve read it!), I don’t want to add to it!