This example renders a stylized cartoon face using React components and D3 shape generators. It shows a yellow circle with black stroke as the background, two star-shaped eyes, a curved mouth created with `d3.arc`, and a wye-shaped nose using `d3.symbol`. The face is centered in an SVG via a `FaceContainer` that positions a `<g>` element. All geometry derives from computed constants for radius, offsets, and mouth width.