I was hoping one of these would show up!
1. I ended up getting what I submitted done from concept to completion in about 6 hours. My initial idea was too ambitious and rather than changing course until the very end I just didn't get much work done on it the entire jam
2. I think, especially for a one pager, working on the page rather than a design document helped me understand the vibe and scope of what I was going for a lot better.
3. Learning Scribus provided a lot of small challenges but nothing a google search or revert to last save couldn't fix. Otherwise, I think wording everything so that it was concise enough to still fit on the page while still providing all the information you needed to understand it had me rewriting sections again and again.
4. Honestly, I was waiting to dive into everyone's submissions until the jam was over, but of the few did I did look at near the start, Precious Cargoes had a really nice presentation and fun idea.