<meta charset="UTF-8">
<canvas width="600" height="400"></canvas>
<script>
var pantalla = document.querySelector("canvas");
var pincel = pantalla.getContext("2d");
//Cabeza
pincel.fillStyle = "Darkgreen";
pincel.fillRect(0,0,350,300);
//Ojo izquierdo
pincel.fillStyle = "black";
pincel.fillRect(50,60,90,90);
//Ojo derecho
pincel.fillStyle = "black";
pincel.fillRect(210,60,90,90);
//Boca parte central
pincel.fillStyle = "black";
pincel.fillRect(140,150,70,100);
//Boca parte izquierda
pincel.fillStyle = "black";
pincel.fillRect(100,190,40,110);
//Boca parte derecha
pincel.fillStyle = "black";
pincel.fillRect(210,190,40,110);
</script>