MS Paint Charlie Brown Flag Doodle

Create a deliberately rough Microsoft Paint-style cartoon illustration with a pure white background, featuring heavy, uneven black outlines, shaky hand-drawn shapes, sloppy brushstrokes, and a playful, digitally doodle-like feel. The main subject is {argument name="character name" default="Charlie Brown"} The bust depicts a figure calmly smiling at the audience, with a round, pinkish bald head, a small tuft of curly hair on his forehead, dotted eyes, a simple, arched nose, round ears, and a wide, toothy grin. He is dressed in a bright {argument name="shirt color" default="yellow"} He wears a short-sleeved, collared shirt, the inside of which is covered in messy graffiti. His left hand holds a long, brown wooden flagpole, which is slightly tilted upwards on the left side of the image. Behind his head, a flag flutters in the wind.{argument name="flag type" default="American flag"} The blue flag area is filled with many irregular white dots as stars, and the red and white horizontal stripes are drawn as rough and uneven bands; the flag has a black outline and appears to be connected to the flagpole. The composition uses a square shape, with the character centered, and adopts a playful and nostalgic Peanuts-style proportion, presenting a deliberately imperfect MS Paint brush texture, without text, shadows, or realistic rendering.