The most important part of the Layout of your Shop is the Joomla template (Joomlahut.com is a good start)!

// Show the vendor link?
if( $this->get_cfg('showVendorLink', 1)) {
    echo $vendor_link;
}

<!-- Print out the value of a variable -->
<p>Product Name: <?php echo $product_name ?></p>

//Create an object of the class vmTemplate
$tpl = vmTemplate::getInstance(); 

## Syntax: $tpl->set( 'This_is_the_variableName_available_in_the_template', $theOtherVariable ); 

$tpl->set( 'product_name', $product_name ); 

// Parse a template
$contents = $tpl->fetch( 'product_details/myFlypage.tpl.php' );
// Print out the contents
echo $contents;
 
// Alternative: Fetch a cached template (caches if no cached copy available and Caching is turned on)
$contents = $tpl->fetch_cache( 'product_details/myFlypage.tpl.php' );
// Print out those contents
echo $contents;