How to send custom attribute in magento Order email.

Recently i was working on a project and my client want to send a custom shipping note in order email.
So lets's see how to achieve this:-
Create a file On this location app/design/frontend/your_package/your_theme/template/email/shipnote.phtml in this file i am getting shipnote info i am installed following extension for it :-
https://github.com/drewhunter/ShipNote
Now in shipnote.phtml i have added following code.

<?php

$order = $this->getOrder();
$shipNoteId = $order->getShipNoteId();
$ShipnoteModel = Mage::getModel('shipnote/note')->load($shipNoteId);    
echo 'Pickup Location :- '.$ShipnoteModel->getNote();
?>

Now open your transactional email template you can find it system->>Transactional Emails or app/locale/en_US/template/email/sales/order_new.html and add following code in it:-

{{block type='core/template' area='frontend' template='email/shipnote.phtml' order=$order}}