Iridescent palette (1-3 hexes); hue travels along this ramp across the film ribbons, so pick analogous or gently contrasting hues

Base canvas color behind the sheen; near-black reads most premium

0 overlays the sheen transparently on the host section, 1 paints the full background

Ribbon frequency: low = broad cinematic waves, high = tighter silk folds

Iridescence amount: how far the hue swings along the palette with the interference fringes

Sheen brightness above the background; keep low for a barely-there finishing texture

Band shaping: higher narrows the lit ribbons into crisper highlights with deeper valleys

Drift rate of the waves and fringe crawl; slow defaults look expensive

optional https image rendered UNDER the treatment (cover-fit) — the animated grain, iridescent sheen and vignette become a premium film grade over the photo; leave empty for the pure abstract shimmer