Find the scale reference
A small figure, doorway, or repeated structural unit can establish a vast environment. Note which cue does the most work. Without a scale reference, a monumental scene can become an ambiguous pattern.
Compare imagined technology
Look at how a device suggests function through handles, joints, light, or surface texture. Ask which details serve the story and which simply decorate the object.
Read the space as a system
Trace the relationship between architecture, atmosphere, and inhabitants. A convincing imagined world benefits from consistent visual rules even when its science is deliberately speculative.