Hello there, @mrshockproof.
I'd like to start with welcoming you to the Community family. I can help share some information about printing a blank invoice in QuickBooks Online.
At this time, QuickBooks Online only prints invoices that have at least one line item assigned. However, I can share with you a workaround that will allow you to print a blank invoice by exporting the form and editing it outside of QuickBooks.
Also, I'd encourage you to check out our free invoice templates to see more invoice template that can help you with your business. You can also read through this article about customizing sales forms in QuickBooks Online for your future reference: How to customize invoices, estimates, and sales receipts.
Please reach out to me here in the Community should you need any further assistance with printing blank invoices in QuickBooks. Thanks for dropping in and take care.