I use Google Slides in Google Drive. I use something called Slides Toolbox that can make one slide for each picture. Then I go back through and edit. I've done a bunch like this, mostly fantasy. I get lots of nice comments on the format.
Really nice report. Thanks for taking all the photos and putting together the slide show. Those buildings are really tall, so I think the solution your son came up with was practical. Better to adjust the rules to get optimal use out of the terrain than slavishly follow the rules. You owe him a rematch to get those wound rules correct the next go-around!
I started off to do Quar lists for OPR (though Grimdark Future doesn't really describe them). But as much as I like One Page Rules for what I've used it for (big fantasy, grimdark skirmish), I don't feel a need to use it for everything. I use Chain of Command for Quar.
However, if you do try some OPR Quar, I'll be happy to see it.