To avoid unwanted elements in the generated images, consider adding negative prompts such as: blood, gore, horror, darkness, death, decay, decayed, apocalyptic, dystopian, war, destruction, ruins, monsters, grotesque, scary, frightening, creepy, and evil. Additionally, consider adding negative prompts to avoid specific objects or details that might detract from the overall mood and tone of the scene. For example, you might add negative prompts like: crowd, people, modern technology, industrial elements, and bright colors.