First, you should identify what your template needs. At a minimum, your invoice should include certain elements, such as your companys name and address, customers contact information, description of services provided, and the agreed cost for the services you provide. More advanced invoices may include your companys logo, terms of payment, and itemization of goods and services provided.
It necessarily describes the kind of services offered and the price agreed for providing them. Usually, companies include their logo in the customer invoice template and, depending on the nature of business, they may mention the payment terms and the breakdown of goods or services offered.