So, the things I appreciate as an admin are

a) Make sure you state whether it's simply a matter of breaking community rules, or whether it needs an admins attention. As it stands now, admins see all reports made for all communities on our instances, which can be a lot. I leave reports for communities that I don't moderate, but they then sit around until a moderator actions them. And the large incoming volume, plus the older ones hanging around can make it hard to tell at a glance which ones require an admins eyes.

b) If it's not immediately obvious from the reported post, tell us where to find the context we need to see why the post is a problem. "Look at posters history" / "Will make sense if you read the previous post" etc.