These are the films we shall reference for the duration of pré-production
Thé Babadook has rather unique scare tactics and also has a creature in a hat so this would also serve for character design for our character at least we'll draw inspiration from this
The Lodge has interesting cinematography choices and also a rather unique atmospheric horror elements.
The VVitch this is a personal favorite in terms of acting, cinematography and tone. I think this in particular might serve well for the only exterior scene in the film.
A Tale Of Two Sisters works in terms of scare buildup. the acting is top notch and I do think we can draw ideas from its production design.
Rosemary's Baby now this.... I look at this in terms of the score, acting, production design, atmospheric horror, sound design. it's a perfect all rounder of the films above.