Oh sorry! So you publish book one but you still have two books to write and publish. Does it ever concern you that you can't change anything major because the first book is already published or do you have everything major set out already? Does that make s

Not nonsensical at all! 

Usually, I’m writing one book while I’m revising another, so if I need to go back and tweak something before we go to final edits, I can. But sure, there have been times when I’ve thought “Why the hell did I think it was a good idea to put a mountain range here?” etc.