What makes you think that you messed up?
If your review hasn't been processed... don't worry about it. The staff will get to it. It sits in the queue... annoyingly... waiting for someone to approve or reject it...
If it is in the Rest of The Story (ROS) section, use the
button to describe your issue.
Next time, PM a moderator and let him know what it is that you wish to be changed (exactly).