create a fully photorealistic professional 4k product visualization using image 1 as the strict reference for the armchair and image 2 only as the upholstery material and colour reference change only the armchair s upholstery apply the lower dark emerald green velvet fabric shown in image 2 to the entire seat and curved backrest do not use the upper light lime green fabric the final upholstery must have the exact deep forest green emerald tone softness texture and subtle velvet sheen of the lower fabric sample preserve the armchair s exact original geometry curved silhouette dimensions proportions seat thickness backrest shape contours seams edges frontal camera angle placement scale and composition do not redesign move enlarge reduce or distort any part of the armchair keep the curved natural wood base completely unchanged including its original shape thickness colour grain pattern texture and matte finish render the upholstery as premium dense short pile velvet with fine microtexture subtle directional nap gentle tonal variation across the curved surfaces realistic soft highlights natural material depth accurate roughness and soft contact shadows the colour must remain rich dark emerald green not lime olive turquoise blue grey or black preserve the original clean white seamless studio background and centred product composition use soft professional studio lighting realistic global illumination balanced exposure natural shadows beneath the armchair accurate ambient occlusion crisp edges high quality anti aliasing and physically accurate materials produce an ultra realistic premium furniture catalogue image in professional 4k quality negative instructions change only the upholstery material and colour no geometry changes no shape changes no camera changes no altered wood base no additional cushions no tufting no buttons no new seams no legs no accessories no people no fabric samples no labels no text no logos no watermark no background changes no plastic looking velvet no excessive gloss no blur no noise and no artificial ai appearance
