Please note that currently the option to purchase shipping label via the "Seller Hub" eBay account is not available to sellers exporting on eBay from India.
You would need to print a packing slip to get your orders out for delivery. Here's what you would need to do:
Go to the Orders tab in Seller Hub.
Select Manage all orders and then View order details.
On the Order details page, select More actions, and Print packing slip and more.