Include a detailed description of your character's fixed traits in every prompt: hair color and style, eye color, skin tone, distinctive features, and clothing. Save your character description as a template and reuse it. For example: 'Emma, 25-year-old woman, auburn shoulder-length hair, green eyes, freckles, wearing a red jacket.' Using the same seed value (if available) also helps reproduce similar compositions. For production-grade consistency, use a reference image upload to anchor the character visuals.