So now you’ve decided to write a fantasy novel. Great! You can exercise your imagination in the fantasy genre in a way that doesn’t quite work in any other. It doesn’t mean you don’t have to be consistent with what you decide to do, but you can work free of the constraint of what can happen, and allow yourself to wonder ‘What if it could happen?’ That’s great; you’ve literally opened yourself up to writing about whole new worlds.But what world should you pick? Are you going to write about mag...