<meta charsed="UTF-8">
<canvas width="600" height="400"></canvas>
<script>
var tela = document.querySelector('canvas');
var pincel = tela.getContext('2d');
pincel.fillStyle = 'lightgrey';
pincel.fillRect(0, 0, 600, 400);
pincel.fillStyle = 'darkgreen';
pincel.fillRect(0, 0, 350, 300);
pincel.fillStyle = 'black';
pincel.fillRect(50, 40, 90, 90); // olho 1
pincel.fillRect(210, 40, 90, 90); // olho 2
pincel.fillRect(140, 130, 70, 100); //nariz
pincel.fillRect(100, 180, 40, 110); //boca1
pincel.fillRect(210, 180, 40, 110); //boca2
</script>