Set design in TV and film creates the physical environment where stories unfold. It involves crafting believable worlds that support characters and narratives, from overall aesthetics to minute details. Designers collaborate with directors and crew to bring visions to life within budget and technical constraints. Key elements include scenic structures, props, backdrops, color palettes, textures, and lighting. The process starts with script analysis and research, moves through sketching and planning, and culminates in construction using various materials and techniques. Designers must balance creativity with practicality to overcome challenges and bring sets to life.