Grand Opening Celebration Sale Poster

[Format] Professional e-commerce main image, square 1:1, cheerful flat grand-opening poster in sunny orange rays. [Colors] Background warm orange with radiating sunburst rays from the center, primary accent burnt orange (#e2711d), secondary cream panels with dashed borders and a solid orange bottom strip, No frame border. [Layout] Top holds a rounded capsule sign with dots on both sides; middle features a large cream rounded rectangle with dashed inner border containing giant dimensional lettering; below sits a bold orange word row; full-width solid orange strip anchors the bottom. [Subject] No product photo; a typographic poster resembling a hanging storefront sign on a sunburst backdrop. [Headline] Top capsule: "First 3 Days of Opening". Giant cream-panel lettering: "Grand Opening Blessings" in dimensional orange. Below: "Buy 2 Get 1 Free" in chunky orange with white outline. Bottom strip: "Nearly a hundred items, welcome in and browse" in white on orange. [Badges] Capsule sign, dashed showcase panel, bottom invitation strip. [Mood] Warm and festive, a friendly shop-opening celebration radiating welcome.