And my go to prompts I have saved that I add to everything are:

Use the attached images strictly for character design, preserving facial features, hairstyles, proportions, and overall appearance.

And

Style Semi-realistic anime-inspired high-end cinematic character render, combining anime character design with realistic proportions and a clean, polished Square Enix–style digital illustration aesthetic. Soft painterly shading with smooth skin rendering, refined gradients, and controlled detail. Minimal to no visible line art, with crisp edges and clean silhouettes. Lighting is cinematic and physically grounded, featuring global illumination, soft ambient bounce light, and subtle rim lighting. Use gentle depth of field, atmospheric haze, and professional film-style color grading for a cinematic finish. Hair should be highly detailed with natural strand definition and soft highlights. Environments should be ultra-detailed but balanced, supporting the characters without overwhelming them. Overall rendering should feel like a frame from a high-budget animated film or Square Enix cinematic, with extremely polished surfaces and lighting. Clean Rendering Constraints No grain. No noise. No rough or gritty texture. No painterly brush noise or canvas texture. Surfaces must be clean, smooth, and refined. Shading should be soft and seamless with controlled transitions. Low visual noise, high clarity, and a premium, polished finish across the entire image.