My suggestion would be to first download the Order Printer app if you haven't already.
This will allow you to customize the invoice and packing slip however you would like. I found a great article on adding your logo and customizing your template.
That way, when in an Order, you can click the "..." icon at the top right of the order details screen and select Print with Order printer.
Hope that helps!
I am trying the add the logo on our packing slip, and found guidance here: https://help.shopify.com/en/manual/orders/customize-packing-slips
However, can someone please tell me how to find the "FILE URL" of our logo, and how the code should look like in below set?
<img src="PASTE FILE URL HERE" style="width: 60px; height: 60px;"> <br>
Thank you very mich in advance!