Plan to read 3-5 minutes of your writing. Stories and essays that have a beginning, middle, and end and also have an emotional impact (happy or sad) tend to receive the best audience response. Practice reading it aloud a few times--to yourself and others--to make sure the piece doesn't run too long and to get the emphasis right on the key words and phrases.
We will try to include as many readers as possible, but do to time constraints we might not get to everyone.