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Welcome to the Community. I'd be glad to help with editing your invoices.
Just to confirm, are you needing to customize the appearance of your sales forms? I'm including resources to guide you on customizing your invoices to add a splash of your business' personality.
Additionally, @Anonymous has a thread on the topic of customizing invoices that I recommend looking at: How to Customize Invoices in QuickBooks Online.
With these resources, I'm confident that you'll have the invoice style that you need.
If you need anything, please post a response, and I'll get back to you. Cheering you and your business for continued success.