A smiley face begins with a single yellow circle, outlined in black, centered on an SVG canvas. This React application renders the shape using JSX within an SVG element, setting its width to 900 and height to 500 pixels. The code imports React and ReactDOM directly, embedding the SVG circle with fixed coordinates and styling properties like fill, stroke, and radius. The example demonstrates a minimal starting point for building a facial expression, relying on the React 17 production build and SVG rendering without additional data sources.