Use Image 1 as the environment and pose reference. Keep the original background, scene, lighting, clothing and body pose from Image 1 exactly the same. Use Image 2 as the identity reference for the face. Replace only the face in Image 1 with the face from Image 2 while keeping the same head position, angle and expression. Do not modify the background. Do not modify the clothing. Do not modify the body proportions. Do not change the lighting or environment. The final result must look like the person from Image 2 naturally appearing in the scene from Image 1. Photorealistic, natural skin texture, seamless face integration, realistic shadows, high detail.
