I give this project an A-, as they pretty much followed every step in the Best Practices article.
Good: Everyone was eager to work and we partitioned work rather fluidly. We were also open to discussing our answers as we worked on them; Everyone was readily available through Slack.
Bad: We could've start organizing/working a bit earlier. This did not become a problem, but it could have if there were complications in the project.
Change: Start earlier. Come up with consistent styling guidelines for our answers.