Hi Christine,
Logos are a fantastic way to increase the aesthetics of your invoices.
You may add a logo to your invoice by following these steps:
1) Go into the Gear icon (cogwheel)
2) Select Custom Form Styles
3) Select your invoice
4) In the Design tab select the option that says Make logo edits
5) Upload your logo
Come back to us if you're still having some troubles
Kristian.
