From the Invoices Dashboard, click on the Create invoice button in the top right corner of the screen or the middle of the screen (if this is your first invoice ever).
Follow the series of onscreen steps to fill in important details including your account information, recipient, and invoice type.
Add/edit any of the text in the yellow highlighted fields to make your invoice as detailed as possible.
To add taxes, click the checkbox next to each line item and be sure to set the tax rate.
Minimize payment issues and get paid upfront by requiring deposits on your invoices. Click the 'Request a deposit' button towards the bottom of the invoice and choose between a flat rate or percentage.
Before you send your invoice, review your settings, and customize your branding options by using the panel on the right of the screen. There's also a handy notes section for you to use...you know, just in case.