I'm trying to change the logo and email associated with my invoices but I can't see where to do that?

You're on the right place,@hello-ellaviolet.

You can update your logo and email address by clicking the Edit work info link when creating an invoice. Let me guide you in doing so.

1. Go to the Invoices menu.
2. Select the Create invoice button.
3. From the Invoice section, click the Edit work info link.
4. Scroll down to the Email section.
5. Enter the correct email address.
6. Select the Customize button located in the upper-right hand corner.
7. Choose  Design to change the Logo.
8. Hit Save once done.
9. Click Save.

You can read through this article to learn more about how you can manage your invoices:  Create an invoice in QuickBooks Self-Employed.

I wan to make sure your concerns or questions are addressed, feel free to leave your comments below. I'll get back to you. You have a good one.