use the provided rendering as the base image use the additional reference images only as material references for specific ground and step surfaces this is a strict surface material edit only the architectural image is already approved all geometry is fixed and must remain completely untouched absolute rule do not modify anything except the surface appearance of the specified floor and step materials do not change camera position field of view framing perspective composition house geometry garage geometry terrace geometry ramp geometry staircase geometry curved widening shape of the staircase number of steps step height step width step depth retaining walls stair cheeks side walls railings bench vegetation planters furniture window positions roof shape object positions any dimensions any heights any edges any outlines any silhouettes do not redesign reconstruct reinterpret move rotate straighten widen narrow raise lower reshape recompose add new elements remove elements only edit the material appearance of the following existing surfaces surface 1 area in front of the garage use reference 1 as the direct material reference apply this material only to the existing paved ground surface directly in front of the garage match the reference in color slab format joint pattern surface texture reflectivity natural stone character important keep the exact existing shape edges boundaries level perspective and layout of this paved area only the surface material may change surface 2 stair treads and risers use reference 2 as the direct material reference apply this material only to the existing visible staircase step surfaces treads risers the steps must keep their exact existing geometry do not alter step size step thickness step proportions curvature widening of the stair position alignment only replace the visible stone material of the steps the steps should visually read as solid stone blocks through material appearance only not through geometric modification surface 3 garden path keep the garden path in its exact current geometry do not change width alignment edging length shape perspective only adjust the surface material so that it appears as a compacted sand fine gravel path with realistic texture keep the existing paving stone edging exactly where it is surface 4 stair cheeks side wall tops and faces keep the stair cheeks exactly as they are in geometry do not change their height width thickness curvature edges position only change the surface finish so they appear as smooth white plaster no stone coping no stone cap only white plaster material realism rule increase realism only through material rendering and surface quality this means better texture fidelity better micro surface detail realistic joints realistic grain realistic stone variation realistic plaster texture realistic contact shadows on the edited surfaces only do not use realism enhancement as a reason to alter geometry layout proportions or architectural form final goal the final image must be geometrically identical to the input image every line edge contour height alignment and object position must stay exactly the same only the surface materials of the specified floor and step areas may change nothing else