Halloween BOGO Taro Slush Promo Poster

Professional Halloween buy-one-get-one poster, vertical, gouache. [Colors] lilac #C9A8E8 into peach #FFD2B0 gradient, taro purple #6E3FA0, pumpkin #F08A24, warm cream. [Layout] arching two-line headline across the top; cup centred on a round orange pedestal; small witch seated at bottom left; black cat at bottom right; price tag floating right of the cup; a wooden sign at right; promo strip spanning the base. [Typography] puffy gouache lettering with white outline and soft inner shading, hand-painted caps on the sign, rounded numerals. [Subject] tall clear cup of purple taro-coconut slush, whipped cream swirl, pumpkin cookie and orange crumbs on top, visible layers of cream and purple mash; tiny witch girl in a purple robe hugging her knees; wide-eyed black cat with a pink collar. [Lighting & mood] flat cheerful daylight, pastel candy haze, visible brush texture. [Details] floating wrapped candies, stars, small pumpkins in the corners; text "BUY ONE GET ONE", "19.9", "TRICK OR TREAT".