Water-Soluble Colored Pencils Set Promo

[Format] Professional e-commerce product main image, square 1:1, cheerful stationery promo style with dense feature pills and bold gradient type. [Colors] White background (#f7f7f7). Purple-blue gradient accents (#5a4fd8 to #7a6ff0) on the feature pills, price circle and bottom banner; a red price-burst badge at top-right; teal-blue strip across the base. Black product tin. No frame border. [Layout] Top-left a purple free-shipping tag; top-right a red arrow burst with the discount figure; the open black tin of pencils dominates the upper-right; a vertical column of three purple feature pills runs down the left side; a wide blue banner strip crosses the bottom with a large purple price circle at its right end. [Subject] No people. An open black hinged tin case holding 48 water-soluble colored pencils arranged in two tilted trays, the sharpened tips showing a full rainbow spectrum of leads, the tin set at a slight diagonal with clean highlights. [Headline] Left pills in white text: "Highly water-soluble", "Pure, true colors", "Smooth, even laydown". Top-right red burst: "$20 OFF". Bottom blue banner, white text: "Officially authorized, authentic original product" above a larger line "Water-Soluble Colored Pencils"; at the right a purple circle with small "Promo price" over a giant white "59". [Mood] Bright, colorful and value-packed; rainbow product energy against a tidy white ground with purple-and-blue promo chrome.