Saludos para tod@s a continuación, presento mi ejercicio, gracias
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Creeper</title>
</head>
<body>
    <canvas width="600" height="400"> </canvas>
    <script>
        const screen = document.querySelector("canvas"),
              pincel = screen.getContext("2d");
        //Cabeza
        pincel.fillStyle = "darkgreen";
        pincel.fillRect(0,0,350,300);
        //Ojo Izquierdo
        pincel.fillStyle = "black";
        pincel.fillRect(56.6,56.6,90,90);
        //Ojo Derecho
        pincel.fillStyle = "black";
        pincel.fillRect(203.2,56.6,90,90);
        //Nariz
        pincel.fillStyle = "black";
        pincel.fillRect(146.6,146.6,56.6,100);
        //Boca1
        pincel.fillStyle = "black";
        pincel.fillRect(106.7,190,40,110);
        //Boca2
        pincel.fillStyle = "black";
        pincel.fillRect(203.3,190,40,110);        
    </script>    
</body>
</html>