Be transparent – Your client wants to know where their money is going, so don't hide or be too general with line items on your invoices, and be prepared to show receipts. Otherwise, they'll wonder if you’re padding the bill. Be specific. For example, instead of listing 'materials' as a single expense, list each one on its own line, such as: paint, nails, plywood, etc.
A breakdown of services: If you're manually creating the invoice using Microsoft Word or Google Drive Templates for invoices, you'll need to include a breakdown of the services rendered and any additional charges associated with your work. Make sure to include a column for each of the following: description of work or services, date worked, quantity, rate, hours worked and subtotal. This makes it easy to tally up the total when you list out multiple projects or tasks you've completed for the client.