<canvas width=" 600" height="400"></canvas>
<script >
var tela = document.querySelector("canvas");
var pincel = tela.getContext("2d");
pincel.fillStyle="darkgreen"
pincel.fillRect(200,50,350,300);
pincel.fillStyle=" black";
pincel.fillRect(250,110,90,90);
pincel.fillRect(410,110,90,90);
pincel.fillRect(340,200,70,100);
pincel.fillRect(300,240,40,110);
pincel.fillRect(410,240,40,110);
</script>