A smiling face rendered in SVG animates its pupils downward, creating the effect of blinking eyes. The illustration uses basic geometric shapes: circles for the head, eyes, and pupils, plus a D3 arc path for the smile. Built with D3.js v5, the animation is driven by chained transitions that move the pupil positions over set durations. The SVG canvas is 960 by 500 pixels, with shapes styled via attributes like fill and stroke.