<canvas width="600" height="400"></canvas>
<script>
var creeper = document.querySelector("canvas");
var pincel = creeper.getContext("2d");
/*pincel.fillStyle = "yellow";
pincel.fillRect(0, 0, 600, 400);*/
pincel.fillStyle = "darkgreen"; //cabeça
pincel.fillRect(0, 0, 350, 300);
pincel.fillStyle = "black"; //olho
pincel.fillRect(50, 50, 90, 90);
pincel.fillStyle = "black"; //olho
pincel.fillRect(200, 50, 90, 90);
pincel.fillStyle = "black"; //nariz
pincel.fillRect(135, 140, 70, 100);
pincel.fillStyle = "black"; //boca
pincel.fillRect(95, 190, 40, 110);
pincel.fillStyle = "black"; //boca
pincel.fillRect(205, 190, 40, 110);
</script>