Need to make the message box bigger how can i do that

Thanks for taking the time to share your concern here in the Community, userprice.carrie.

Let's adjust the font size on the Message to customer on section to enlarge the text. 

Here's how:

1. Go to the Gear icon.
2. Select Custom Form Style.
3. Locate and open your invoice template.
4. Choose the Content tab.
5. Click the pencil icon in the third box.
6. Under Message to customer on, click the font size by clicking the drop-down arrow.
7. Select 12pt.
8. Then, click Done.

Once done, you can now add notes to your invoices.

For more details, please see this article: Customize Sales Forms.

Aside from adjusting the font size, you can also add logos to your sales forms.

I suggest reaching out to us if you need assistance in managing your sales transactions. I'm always here to help.

Hi userprice.carrie,

Hope you’re doing great. I wanted to see how everything is going about making the invoice message larger. Was it successful? Do you need any additional help or clarification? If you do, just let me know. I’d be happy to help you at anytime.

Looking forward to your reply. Have a pleasant day ahead!