<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);
//ojos
pincel.fillStyle="black";
pincel.fillRect(50,60,90,90);
pincel.fillStyle="black";
pincel.fillRect(210,60,90,90);
//nariz
pincel.fillStyle="black";
pincel.fillRect(140,150,70,100);
//boca
pincel.fillStyle="black";
pincel.fillRect(210,190,40,110);
pincel.fillStyle="black";
pincel.fillRect(100,190,40,110);
</script>