{
  "blueprintId": "blueprint-09",
  "kind": "template",
  "evidenceClass": "method-not-independently-tested",
  "contentVersion": "pilot-13ee5c32a28408151ee36e44",
  "title": "Reflective bottle light sweep: keep the bottle still, move the highlight",
  "description": "An image-to-video practice brief for a stationary reflective bottle. Separate a moving light band from bottle movement, then check the cap, contour and shadow against the first frame.",
  "goal": "Create one restrained light sweep across a bottle without asking it to rotate. This is an original teaching method with an illustrated practice input; it has not been independently tested on MiniMax H3.",
  "preparation": [
    "Use the supplied illustration to rehearse the brief, or replace it with a photo you own or may use. Keep the full cap, bottle base and contact shadow visible.",
    "Choose a starting image with one dominant reflection and an uncluttered background. A blown-out white bottle edge leaves little detail to compare.",
    "Identify three checkpoints before writing: the cap corners, the outer bottle contour and the base touching the surface.",
    "Keep exact product lettering outside this exercise. If the finished shot requires a readable label, prepare a permitted label layer for editing after generation."
  ],
  "prompt": "Use the uploaded image as the starting composition. Keep the bottle, cap and camera stationary. A single narrow soft light band moves slowly from the left side of the bottle to the right, changing the reflection on the glass while the bottle keeps its original silhouette and position. Keep the background and contact shadow steady. The band passes once and settles into a quiet final reflection. No bottle rotation, no additional objects, no added lettering.",
  "steps": [
    {
      "title": "Mark what must stay fixed",
      "body": "Inspect the first frame and note the cap width, the shoulder curve and the two lower bottle corners. These checkpoints let you distinguish a reflection changing from the object actually moving. Do not ask the model to lock a logo or infer hidden product geometry."
    },
    {
      "title": "Give the light the only moving role",
      "body": "Start with one left-to-right light band and a stationary camera. Avoid combining a light sweep, bottle spin and camera orbit in the same attempt: you would lose the ability to identify which request changed the contour."
    },
    {
      "title": "Inspect the passage across the edge",
      "body": "Compare the beginning, the moment the highlight reaches an edge and the ending. Watch the shoulder and cap at the bright transition; a moving white edge can hide a shape change that is less obvious during normal playback."
    },
    {
      "title": "Revise one cause, then hand off the label",
      "body": "If the cap or outline drifts, first simplify or soften the light instruction while retaining the same input. Once the object motion is acceptable, place any exact label or campaign text in the editor and check its alignment throughout the clip."
    }
  ],
  "acceptance": [
    "The cap keeps the same outline and remains attached to the neck.",
    "The bottle does not translate or turn while the highlight travels.",
    "The outer glass contour remains recognisable when the light crosses it.",
    "The base and contact shadow do not slide independently.",
    "There is one light sweep, with no second band or new light source appearing.",
    "The ending has a stable reflection instead of a sudden change in bottle shape.",
    "Any required exact lettering is verified in the edited export, not accepted solely because the generated clip resembles the input."
  ],
  "troubleshooting": [
    {
      "symptom": "The bottle rotates as the highlight moves",
      "change": "Replace words such as rotating reflection or orbiting light with a narrow light band crossing a stationary bottle. Keep the camera instruction stationary and retry without adding more object details."
    },
    {
      "symptom": "The cap stretches when the highlight reaches the top",
      "change": "Use a softer, lower-contrast sweep and a starting image whose cap edges are visible. Compare the cap at the same moments; a brighter sweep is not a fix for missing geometry."
    },
    {
      "symptom": "A bright edge becomes a second bottle",
      "change": "Make the band narrower and remove requests for sparkling reflections or multiple glints. Check the original outline separately from the interior reflected stripe."
    },
    {
      "symptom": "The label drifts even though the bottle is still",
      "change": "Keep generated text out of the acceptance decision. Replace or composite the permitted label in an editor and inspect every point where the highlight crosses it."
    }
  ],
  "ending": "End with the light resting to one side and the bottle still in its starting position. Save the accepted brief and the checkpoint list with your input so the next change has a clear baseline.",
  "assetCaption": "Original editable vector illustration of a reflective bottle, created for this practice package. It is a teaching input, not a product photograph or a generated-video result."
}