Custom PDF template in Commerce Billy I have installed Commerce Billy module on my website.

Then upon ordering I get this PDF with this layout.

But I want to change the table displayed, because I've created some custom fields in it and I want to display it also in the table.

Any help will be greatly appreciated.
This table is actually the rendered view 'Line items (Commerce Line Item)' which is created in code by Drupal Commerce. So all you have to do is to modify this view to your needs.

To further customize the display of your invoice, you can make a copy of css/pdf.css and themes/commerce_order--commerce_order--pdf.tpl.php located in commerce_billy_pdf folder into your custom theme and experiment.