See here for the results, there are links to the final png as well as timelapse videos. Looks like the Beehaw artwork turned out well, and there’s plenty of other great art on there, too. I managed to get a couple of little pieces squeezed in there myself just before the end.
Looks like they’re planning on trying to make this a yearly event as well (see here).
This looked really fun! Sorry I couldn’t participate, I’ll try to join next year’s.