What would you expect to see in a horror film?

Conventions in a Horror film:

Usually, in a horror film you would expect to see an annoying dumb teenager get her head ripped off, however horror films have many different story lines which are griping and captivating! Well, i like to think so anyway. 
I tend to look for the less obvious things like whats in the background or did you see that little boy standing there in the shadow? There are many ways of controlling the audience and leading them to a big frightening scene. 
They have the obvious conventions like the bad guy/bully getting what he deserves, the blonde teen falling over and the house party that turns into a nightmare.
The sounds represented in horror films are a creepy tune that grips you to the end of your chair and gives you that feeling that something is about to jump out at you. A main song which is played in horror films such as Insidious is 'Tip Toe' by Tiny Tim. This song i feel makes you feel something is standing staring at you making me feel like something is about to rip me apart.
We all know that film that has the main character stare in the mirror then a hideous scary face appears behind them? yup, that happens a lot. Also in horrors they wear clothing that would be easy to get hold of and drag them along the floor.
Always in a horror theres a freaky setting, whether its a dark street or a cabin in the woods. I feel the setting is a massive part, usually a haunted house which previously had people die is a good setting as it means supernatural characters. Although anything similar to The Grudge is not ok!
Locations for horrors are lakes, woods, asylums, attics, abandoned houses, deep water, blizzards and anywhere dark! These are used and are effective as its easy for something to happen like sharks and ghosts which may attack/kill the character. 
Camera angles used are usually close ups to show the emotions in the characters but also the creepy face of  supernatural curse. 
Medium shots are used to show a a large section of a scene to see if the audience can spot anything in the background like a little boy standing along by the coats and gives the viewers a wider perspective of the film and what may jump out. 
High and low angles are also used to show fear and fright.
Follow camera movements are used a lot as they usually follow the main subject to a scary scene. It makes the audience feel scared as you don't know where the character will take you.