Basically there is no standard of creating invoices. You can create your own invoice with your own language, and if your customers receive your invoices and they pay your products or services, it means your invoices are accepted by them. Usually, customers don’t really care about the format or the layout of invoices. Their concerns are on the value and payment terms that have been agreed before. Except for big companies that bounded by accounting rules where they only can accept invoices based on their standard accounting rules.
This template is a standard invoice template… at least for me. Probably you will see it differently. You can ignore this template if you want to make a professional invoice, but if you invoice reference for making your own invoice, you can download and modify this template.