Where can i find the docx files for Airy new design?

Great having you join us here in the Community, @1906000. I’d be glad to help you fix this issue about customizing sales forms in QuickBooks Online. 

QBO provides the tools you need to create professional-looking invoices, quotes, and sales receipts. However, we’re unable to provide a document file for Airy new template designs. That said, you can just create a new template for it. 

Please see this article for more details about customizing the appearance of your sales forms: Customise invoices, quotes, and sales receipts in QuickBooks Online.

In addition, I've got these helpful resources that can help you along the way in importing and designing custom form styles for your sales forms: 

• Import custom form styles for invoices or estimates
• Add, customise, or remove logos on sales forms

Please let me know if you need clarification about custom form styles, or other QBO related concerns. I'll be standing by for your response. Have a great day and stay safe.