<canvas width="600" height="400"> </canvas>
<script>
var pantalla = document.querySelector("canvas");
var pincel = pantalla.getContext("2d");
pincel.fillStyle = "darkgreen"; // esto es la cabeza
pincel.fillRect(0,0,350,300);
pincel.fillStyle = "black"; //ojo
pincel.fillRect(46,40,90,90);
pincel.fillStyle = "black"; //ojo
pincel.fillRect(204,40,90,90);
pincel.fillStyle = "black"; //nari
pincel.fillRect(135,130,70,100);
pincel.fillStyle = "black"; //boca
pincel.fillRect(200,180,40,110);
pincel.fillStyle = "black"; //boca
pincel.fillRect(100,180,40,110);
</script>