We have published development tools for MSFS and a companion tutorial to guide you through creating background aerial imagery for Purdue University Airport (KLAF) in Tippecanoe County, Indiana, United States: Aerial imagery | MSFS Toolkit
These tools were (in part) inspired by the insanely complex tutorials we’ve seen so far. With our tools, there’s no need to follow long instructions page after page. As long as you know your way around command-line tools, it’s really easy. No need to calculate anything, measure pixels, lay down grids, and all that - just forget it.
Download the appropriate imagery, draw a border around it, and the rest will be done by our tools.
You can download tools and example data from:
https://github.com/noolaero/msfs-toolkit/releases