Native text-to-video. No image reference. No start-frame still. Mix this as a landscape frame in the scene. Colour-field hold. Flat yellow sky (CRITICAL), three robes on a dune, almost still. Camera: locked-off. Motion: fabric once. Landscape. Held moment, grade and grain unchanged for the whole clip. Avoid: image reference, start-frame still, animate this picture, speed ramp, whip pan, particle bloom, grade shift, talking-head, recipe demo, celebrity, real logos, Leonardo purple, blood, gore, icky dental close-up.