The Possession: Deconstruction of Possession Scene

I couldn't find the scene I wanted to deconstruct on YouTube therefore, I had to find the full movie online and deconstruct it that way.
The first thing I noticed when watching this film is all the objects that have a significant meaning. For example, oil and water. Oil represents light whereas water represents darkness. Due to science these two cannot physically mix therefore they will stay seperate, just like good and evil should. The little girl who is possessed becomes very strong and forceful. This enhances the idea that there is a demonic presence inside of her that is controlling her. The other people within the room are suddenly inferior as they cannot physically control the demon.

As Emily becomes more possessed, her facial expressions begin to change. For example, her eyes become pure white without any pupil, her mouth becomes a dark red colour, almost black, and she develops these very long fangs. This is a sign to everyone, including the audience that there is definitely nothing physical or emotionally wrong with her, but something more dark, evil and sinister. 

As Emily's father approaches the door she has just run in to the tension builds dramatically. This is due to the fact that there is now no sound what so ever, there is just silence. Another feature that adds to the tension building is the lighting. The doorway is pitch black with very low level lighting surrounding it. This puts the audience on the edge of their seats. 

When it comes to lighting, I noticed that they used an orange light to illuminate Emily once she is possessed. This works well as it is very difficult to see clear features until this type of light therefore causing the audience to become more scared. In addition to this, Emily repeats the same words and noises over and over. This creates a sense of fear and being caught up in something she cannot escape from. Emily's voice slowly changes into that of a scary possessed, demonic voice, scaring the audience beyond belief, then she suddenly disappears. 

SOUND
There is parallel non-diegetic background noise that builds the tension. This isn't music but they are constant sounds that draw the audience in and puts them on the edge of their seat. As the demon becomes more powerful and begins gaining strength over Emily, there is a lot more diegetic noises. The wind in the hospital room picks up causing it to become louder and noisier. In addition to this, Emily begins screaming which builds more tension yet makes the audience feel sorry for her as she is currently claimed by the evil presence that she cannot shake.