mi versión es diferente :)
<!doctype html>
<html lang="es">
<head>
<meta charset="utf-8">
<title>creaper</title>
</head>
<body>
<h1>cara de creaper</h1>
<canvas width="600" height="400"></canvas>
<script>
var pantalla = document.querySelector("canvas");
var pincel = pantalla.getContext("2d");
pincel.fillStyle = "lightblue";
pincel.fillRect(0,0,600,400); //canva
pincel.fillStyle = "darkgreen";
pincel.fillRect(125,50,350,300); //cabeza
pincel.fillStyle = "black";
pincel.fillRect(175,100,90,90); //ojo izq
pincel.fillStyle = "black";
pincel.fillRect(335,100,90,90); //ojo der
pincel.fillStyle = "black";
pincel.fillRect(265,190,70,100); //nariz
pincel.fillStyle = "black";
pincel.fillRect(225,240,40,110);
pincel.fillStyle = "black";
pincel.fillRect(335,240,40,110);
</script>
</body>
</html>