Connect with and learn from others in the QuickBooks Community.
I'll point you where you can locate your created invoice templates in QuickBooks Online (QBO).
Follow these steps:
On this page, you have the option to create new invoice templates, as well as edit the ones you already made.
Here's how to select a form style to apply to an invoice:
I'll also share this article: Import custom form styles for invoices or estimates. It has the steps on how you can design invoice templates you can import to QBO, and apply them to your invoices.
Direct other concerns you may have in the comments below. I'll take care of them for you.