Watercolor Race Track Boy Birthday Party 招待状

A watercolor-style illustration of a circular racetrack viewed from above. The track is rendered in a large circle with a white center and yellow dashed lane markings. Four sports cars are positioned along the track - a blue car in the top right, a red car in the middle right, a yellow car in the bottom right, and an orange car in the bottom left. The track is surrounded by a dark gray border with green brush strokes creating a grassy area. The illustration has a loose, artistic quality with visible brush strokes and watercolor textures, particularly in the background areas. The cars are drawn in a simplified, stylized manner with clean lines and solid colors. The entire composition is set against a black brick background.