Screening, what will it show?

In our film opening the scenes will be very dark, also there will be flashbacks and imaginations of what could happen. The character will be scared as they do not like being home alone. To make the horror opening scarier there will be a part where the character imagines what is going to happen as they fall into a short sleep, as they wake up they will go on their phone and send a snap chat back. When the phone goes down a face will appear. The idea of flashbacks in the editing process makes it scarier because it makes the audience feel scared of what's happening in the flashback but also leaving them on edge of what could happen when the character wakes up. http://www.hark.com/clips/pwqhzksgdc-scaryflashbacksting-tfx2057 A good sound for a flashback is key, it has to be quite loud and build up tension fast as they shouldn't last long.