How to put another picture instead?

Question

PHP

$image = new Imagick('test.png');
$text = 'Test';

$draw = new ImagickDraw();

$draw->setFont('Arial');
$draw->setFontSize(20);
$draw->setFillColor('black');

$draw->setGravity(Imagick::GRAVITY_SOUTHEAST);

$image->annotateImage($draw, 10, 12, 0, $text);

$draw->setFillColor('black');
$image->annotateImage($draw, 11, 11, 0, $text);

$image->setImageFormat('png');

header('Content-type: image/png');
echo $image;