Generate a top-down street contrast poster based on specific thematic content: the camera looks down from a high place, ground texture and pedestrian movement form a grayscale background, the main subject is located at the core position of the image, clear, static, with a formal or calm posture, while other surrounding people or objects have obvious motion blur. An oversized theme-derived highlighted title spans above or behind the main subject, the font is compressed and heavy, forming a planar conflict with the ground perspective. Colors maintain the relationship of a monochromatic street photography base, a single theme highlighted text, and a small amount of high-brightness small text descriptions; the mood is cold, rebellious, and emphasizes difference. The layout should make the main subject look like they are surrounded by the world's flow but not swallowed by it; failure symptoms are a lack of top-down order or the highlighted title becoming an ordinary banner. —————— Store Promotion: Vertical 3:4, looking down at the entrance of a commercial street, crowds passing in front of a hair salon sign forming a blurred band, an adult customer wearing a black hairdressing cape stands in the center, the hairstyle silhouette is clear. Main Text: Big title says 'Today Change a Head', small text says 'Pre-cut consultation 0 yuan / Weekdays 12:00-18:00 / Take side profile photo first upon arrival'. Actual Use: Suitable for posting on Moments or Dazhong Dianping cover, the subject must be attractive but maintain public promotion standards.