You can import your own custom invoice template.If you can go to the cog in the top right>QuickBooks Labs>import style>turn on
Then go the cog>custom form styles>new style drop down>import style.
You can then click on download a sample which gives you a guide on how to create the invoice in word(it needs to be a doc x file)also it shows a simple template example and a more complex invoice template as a guide.
You can then save the created template and upload in the upload part of this section.
Any questions let us know