Add fixed image to the printing invoice

first i wanna thanks all the staff for this great diamound system,
Please, i have a qustion about invoice template, i want add a fixed image on the sidebar of the document, can you help me with a steps to do that if it possible ? the green side is the image place that i want to add.

You can create a custom print format using Jinja/HTML/CSS and position the image anywhere you want