Cute birthday card design with the words "HAPPY BIRTHDAY" in green letters on top of an illustration of a colorful cake, and "in the style of Qing Hou" with a clock on one side. Vector graphics, flat colors, simple shapes, and a colorful design. --ar 3:4 --niji 6 --sref <https://s.mj.run/H2Vn10TX3YA>