When you create a setting for your story, the world in which your story takes place, how do you go about populating it? I'll use my story as an example. The setting is an Inn in the afterlife. The world is just an eternal gray nothingness. Human souls go there when they die. Some of them reach The Inn. Others don't. Now, for the purposes of this story, only human souls are necessary. But, I was wondering if I should populate the world with other creatures. The problem I'm facing is that if I do so, I could end up with a fairly generic fantasy setting. Imps, pixies, will o' the wisps, sprites etc. Which would probably detract from the story. BUT, not having something populating the world might make it seem too empty. So how do you decide what to populate your world with?