Black Friday Flash Sale Comic Poster

[Format] Professional Black Friday e-commerce sale poster, vertical 9:21, flat comic doodle style with a bubbly speech-burst headline and a cute cartoon dog. [Colors] Sky-blue flat ground with a darker blue shadow and accent dashes; a white jagged speech burst with black chunky type and a blue underline; an orange alarm-clock doodle; the dog in orange-and-white with a green cart full of colorful gifts; a pink heart bubble. No frame border. [Layout] A small logo chip top-left; the white starburst panel occupies the upper half holding the stacked title with "!!!" below; the lower half shows the cartoon corgi mid-run pushing a wire shopping cart loaded with wrapped gifts toward the right, a heart speech bubble above, a flat darker-blue ground shadow. [Subject] No people. A cheerful cartoon corgi with closed happy eyes, an open smile and tongue out, orange-and-white coat, sprinting on its hind legs while pushing a green-gridded shopping cart stacked with yellow, pink and blue gift boxes. [Headline] Inside the burst: "BF" in huge black caps, "Flash Sale" in chunky black caps, "Survival Guide" on a blue underline, an orange alarm-clock doodle beside it, and "!!!" oversized below the burst. [Mood] Bubbly, cheeky and energized; Saturday-morning cartoon pep applied to flash-sale urgency.