Two-colour risograph zine cover — GPT Image 2.6 posters prompt CMYK halftone portrait poster — GPT Image 2.6 posters prompt Looping GIF: deer in falling leaves — GPT Image 2.6 motion prompt Editorial data poster: a day, measured — GPT Image 2.6 posters prompt Folk-art winter greeting card — GPT Image 2.6 posters prompt Paper-cut night market diorama — GPT Image 2.6 posters prompt