I normally start with my shapes in illustrator and in black and white to help get a sense of value. then go to a color palette from there. When this started to take form I began to think maybe back and white would give this an even better sense of old horror movie style and went with it!
I thought this would also be a good piece to work with a lot of different textures for things like the carpet, wallpaper, and an overal noisy film noir style. Finished it off with some lighting and shadows and then my regular post production stuff.