Hi zringasi,
Congrats on starting a part-time business as an Uber driver! That's a great way to make extra part-time income.
QuickBooks Online makes it easy to customize your invoice. You can change the look and feel of your invoices in QuickBooks Online so they highlight your business. QBO allows you to create a custom template for specific transactions or customize standard templates which you can use for all transaction types. I encourage you to check out this great article which will show you how to do exactly that.
There are some great tutorials and tips and tricks on using QuickBooks Online. I recommend you to check them out using this link. I see you also tagged QuickBooks Self-Employed. If that's the product you're using, I encourage you to contact their support here. Let me know if you have questions.