Aw: How can I create individual confirmation-page after checkout?
Hello
If you want to show even more informations on your confirmation-page you must create a Plugin which reacts on the trigger onBeforeDisplayCheckoutFinish().
I just did this, because I needed the total amount of the order for a trackingscript.
As example use the free google conversion addon and install it.
of course you could make it the very awfull and just change the code of this plugin, what i don't recommend ...
as example my plugin needs the amount, so I created a new plugin based original on the google plugin with following code.
public function onBeforeDisplayCheckoutFinish(&$text, &$order_id){
$row = JTable::getInstance('addon', 'jshop');
$row->loadAlias('affilinet_tracking');
$addon_params=$row->getParams();
$db = JFactory::getDbo();
$query = $db->getQuery(true);
$query->select("o.order_subtotal");
$query->from('#__jshopping_orders AS o');
$query->where('order_id = ' . $order_id );
$db->setQuery($query);
$amount = $db->loadResult();
...
of course you can get everything on this page, since you got the order_id
hope this helped a little