improve the realism of the provided interior render while strictly preserving the original composition and architectural intent strict rules must follow do not change camera framing proportions or geometrydo not add remove or redesign any elementsdo not move or duplicate any objectsdo not reinterpret the scenescene understanding important the semi transparent grey surfaces on the left and right sides are existing sheer curtainsthere are no red panels anymorethese curtains must remain exactly where they are and must not be replaced or movedallowed changes only these 1 curtain material refinement improve the existing curtain material to look like realistic white sheer fabrickeep exact position shape and coverage unchangedadjust color from grey to natural white sheer curtain toneincrease realism of translucency medium transparency add subtle vertical fabric texturekeep the surface flat do not introduce new folds or volume2 realism lighting enhance overall photorealism materials global illumination reflections contact shadows add natural sunlight coming through the windows in the backgroundlight should pass through the sheer curtains and create soft diffusiongentle gradientssubtle light glowkeep lighting physically accurate and balanced no dramatic beams or overexposure important do not replace the curtains they already existdo not add new curtains anywhere elsedo not modify any other materials or objectsonly refine the curtain appearance and lighting realism