-Practice your reading. Do it at least 3 times and time it. If it's longer than the time you've been given figure out how to cut it down. Even if it's a really great piece, reading over time never fun/fair for the other readers.
Go without notes if you struggle to memorize or are not comfortable w/o them. It is fully possible to give a moving, emotional and funny reading with a page in front of you. Not everyone is a natural storyteller but I fully believe everyone (with practice) can read well
Announce to the room you've just written the thing you're reading or that you've just learned the genre just for this anthology/issue etc. It's not charming, or self-effacing. At best it's a humble brag and at worst it's a disrespectful dig at the editor and other readers.
Remember that it's ok to be nervous. It's ok to acknowledge it. The audience at most readings is made up of your friends, family, and other writers and everyone really wants you to succeed. If you stumble or make a mistake it's ok. Stop, breathe, and restart at that spot.
Err on the side of reading slowly. Almost every new reader reads quickly & audiences, more than ever before, need space to let the words sink in. It's better to choose a shorter passage you can stretch out then to read like an auctioneer cramming in as many words as possible.
Greet (either before of after) the other readers. Let them know if you enjoyed their piece and introduce yourself. One of the best things about reading is meeting other people whose work speaks to you or whom you might share a stage, panel or even project with in the future.
Attend other events in the series before you read (but also after) if you can. It's not always possible with one-shot events, but one of the best ways to deal with anxiety or pre-reading jitters is to get a sense of how the event works and get a feel for the venue/crowd.
CG: I usually try to include this in emails before events if possible. I'll offer the info "you say my name Sin-air-ah."
DO: remember you can be yourself on stage. Posturing or putting on a different voice for reading is not necessary. Your voice is a great voice and not all readers/readings should sound the same.
CG: This is where practicing/comfort come in handy!
"You’d think this would be obvious, but I’d add to stay and listen to the other readers (unless you have a dire time conflict or it’s a marathon reading)."
CG: Yes! It's not a good luck to read and run (especially if you read over time!)