If you want more guidance as to how to write a report, there's a [ame="http://www.derelictplaces.co.uk/main/showthread.php?t=16286"]whole big guide here[/ame].
Oh I see! We call it a report but it's just another thread really. Go to the forum you want to post the report in, and click on the "new thread" button. It's exactly the same process you used to post this.