For a last-minute inspiration - bravo and well done! Please do make another with the feedback you get and what you learned in doing it.
Here's what worked for me:
- First and foremost, this is the first time I've ever seen WM played, which is a great demo to get gamers interested.
- Second, I thought you did a good job, generally, of editing to the end of each turn and showing the results. (Although, as a demo, you might plan to show each phase with an explanation for the first turn. After that, you can just jump to the end of each player's turn as you did here.
- Considering your equipment and (I'm assuming) no real experience, I thought you did some real nice "camera work" in places. e.g. Zooming to the Empire artillery and then panning to the orc unit it was targeting. That said, there were places where the autofocus wasn't cooperating e.g. the goblin shaman. Not that I would have done better. That and lighting, which you already acknowledged.
- I also like how you kept the table uncluttered - dice, sheets, books. You're buddy does have an enviable set up. All the amenities - beer, snacks, TV, dog to pet on. Just like my game of WotR yesterday.
It might also be helpful to add some reflections on the game - What each player felt worked well, mistakes they learned from, etc. Also, as a demo to showcase Warmaster, it might be nice for a minute's worth of observations about how the system compares to other familiar systems (not better or worse, just mechanics) and a thought or two on what you enjoy about it and why it's worth exploring.
Again, this was inspirational for me and I'd love to see more.
Cheers!