Research and planning - Horror film poster shots

I have been researching Film posters and I have noticed they show us a shot of the place were the film takes place or either the protagonist. In the above image of ' The cabin ' they have the place it will take place and then ' The Conjuring ' is a two shot of the protagonist and then we have the ' scream ' poster which is a close up of the protagonist. For my film poster I think I will be having a Medium shot of the protagonist.