If you were writing a horror story or directing a horror movie what details would you use?

If I were writing or directing a horror movie I would most probably give it a scary title like "The Invisible" or "Quarantine". I would be sure to use heart pounding scenes where the viewers can't bare to watch. My story would be based on something scary, like a murder. I would add details to all the scary scenes to make them look realistic. I would use eerie music in the background to create a sense of"something bad is about to happen", also doors that cringe as you are about to open or close them. A young cast is really important specifically young girls wearing dresses that are carrying dolls who happen to be possessed. Also lots of blood, guts, food and vomit. No more detail because this is starting to become vivid and I want to get to sleep. Good night! Come to think of it my story would take place in a haunted house which was owned by a psychopath. The haunted house would be located on a DEAD END street in Detroit, Michigan. It would be a run down ram shackle of a house that when upon entering you would be hearing little girls screaming using high pitched voices saying"Do you want to play with me"? Then you would be hearing sounds of foot steps running on a wooden floor."Clop, clop, clop........to be continued......