Terraced Crown Architectural Ornament (Style-Only, Image-Conditioned)

Re-render this image as a close study of interwar skyscraper crown ornament, with the bold nested chevrons and terraced ribs of 1930s New York architectural metalwork. Do not add a tower: keep the source subject, pose, and spatial arrangement intact, and translate its existing upper edges into a few repeated stepped metal ridges. Model each ridge as cut, folded, and riveted stainless steel fixed against pale weathered masonry. Bright glancing daylight should catch the ridge tips, while fine gray grime settles in the recessed seams and soft stone pores remain visible beneath them. Limit the pattern to three large ascending chevrons so the original form remains legible at a glance. Use pewter silver, chalk limestone, shadow blue, and one restrained pale amber reflection, not all-over gold. A faint dark line along the junction of stone and metal shows how the decorative shell was attached, rather than pretending it grew from the wall. Background shadows should fall downward in long, controlled planes. Favor frontal solidity and close tactile evidence over a spectacular skyline or a commemorative coin. The atmosphere is proud but weathered, a public facade bearing the marks of ordinary exposure. Leave a calm, uncluttered band of negative space along the top or bottom edge where a title could sit. Strictly no on-canvas text, no legible lettering, no signature, no watermark, no logos. Preserve the subject, pose, and composition of the source image exactly, change only the medium and rendering. Aspect ratio matches source.