As Kathryn Bigelow, a filmmaker, creating a world would involve immersing the audience in a believable and engaging environment that serves the narrative and characters of the story. Here are some steps I would take to create a world for a film:
Concept development: Start by brainstorming ideas, and develop a clear concept of the world you want to create. Consider the time period, location, and socio-political context, as well as any unique elements or rules that govern the world.
Research and inspiration: Gather inspiration from various sources, such as real-life locations, historical events, other films, or works of art. Thorough research is crucial to making a world feel authentic and well-rounded.
Visual design: Collaborate with production designers, art directors, and costume designers to develop a consistent visual style. This includes designing sets, locations, props, and costumes that reflect the world's unique qualities.
Worldbuilding: Establish the rules and norms of the world, as well as any supernatural or fantastical elements. Make sure these aspects are internally consistent and contribute to the overall narrative.
Character development: Populate your world with interesting and diverse characters who have their own unique motivations, desires, and relationships. Ensure that their actions and decisions are in line with the world's established rules and norms.
Storytelling: Weave a compelling narrative that takes place within this world, ensuring that the characters, locations, and events all work together to tell a cohesive and engaging story.
Atmosphere and tone: Use cinematography, lighting, and sound design to create a specific atmosphere and tone that complements the world and its story.
Remember, the goal is to make the audience believe in the world you've created and become invested in the story and characters that inhabit it.