Hello, sgilreath.

We're glad that the steps shared by my colleague SophiaAnn help you out for printing the invoices. As for changing the look of the invoice, do you mean to remove the columns you mentioned in the invoice window? If so, the option is unavailable. For now, you can only turn off the Date, Product/Service, and SKU since these are optional columns.

Here are the steps:

1. Go to + New > Invoice.
2. Click the Gear icon located in the upper right-hand corner.
3. In the Optional Columns section, you can un-check the columns to turn it off.

I've got this sample screenshot for a visual reference on how you can remove the columns I mentioned:

Furthermore, if you want to remove the Quantity, Amount, and Rate columns in the invoice template, you can follow these steps:

1. Go to the Gear > Custom form styles.
2. Click the Edit link of the default invoice template. 
3. Select the Content tab and click the activity section of the invoice template.
4. In the Columns section, un-check the Quantity, Amount, and Rate columns.
5. Hit Save.

Here's a sample screenshot for a visual guide:

To help manage your sales form templates, please check out this article: Customise invoices, estimates, and sales receipts in QuickBooks Online.

If you need help with customer task in your QuickBooks account, please let me know in your reply. I'll be happy to assist you again. Have a great day ahead!