A yellow circle with black outlines forms a smiling face centered in the SVG canvas. Two static eyes and a curved mouth are drawn, while a pair of rectangular eyebrows animates vertically, moving downward and then returning to its original position. The piece uses D3 v5 to construct the shapes via `d3.select` and `d3.arc`, and relies on chained `transition.duration` calls to create the eyebrow motion. All elements are rendered as SVG within an HTML document.