keep the image exactly the same in composition framing objects proportions lighting colors and camera angle do not change add remove or reposition anything only improve the marble material so it looks highly realistic and natural with authentic stone veining subtle translucency smooth polished reflections realistic depth and fine physical surface detail remove all pixelation digital noise grain artifacts banding and artificial texture preserve sharp clean edges and photorealistic detail the final result should look like a high end professional photograph of real marble not cgi