How to add attachment to agreement from library template using Power Automate?

[brooke_7530]

I'm trying to create a Power Automate flow that sends vendor invoices for internal approval and was able to create one using a library template. The template has only the form field layers on it that signers are required to fill out when approving invoices, though.

How can I attach vendor invoices to my template in my flow and send each invoice (with the template) separately? I haven't been able to figure this out yet. 

Attached is a screenshot of the actions currently in my flow.