Props and costume

What props will I need to use?

A Knife - for the antagonist to hold and stab Heidi with.
Mask - the mask the antagonist wears to hide his face.
Fake Blood - To cover Heidi in for when she is running in the forest.
Mobile Phone - It starts ringing in shot 34, Heidi answers only to hear the antagonists sinister voice.

Are they conventional?
Yes, especially the mask and the knife. Weapons are very often featured in horror films and a knife if usually the first thing in their house someone will think to grab in order to defend themselves. Masks are also conventional of the genre as explained in my previous post on Character Profiles.


Costumes
Heidi - A dress covered in blood
The Antagonist - All black clothes with a hooded mask

Are they conventional? 
Yes, the antagonists simple clothing only embellished by the detail of the mask is conventional of the Horror genre. You don't often see killers in all there splendour wearing elaborate dress.

All of these antagonists wear dull clothes and brandish weapons, both conventions of the horror genre that I will apply to my sequence.