I'm finally, finally starting work on a novel today. It's going to be a thriller-horror (or whatever you want to call it). I had a vision of a man desperately trying to hide in a large skyscraper from someone/thing and I'm going to expand on that. So anyway, how will I know if it's thrilling or scary? I know what's going to happen so to me it's all irrelevant garbage, but anyone else doesn't have a clue. Anyone else facing this? Any tips?