Think about what you want to say before saying it and then use all your literary talent to dazzle me with words.
Keep an eye to what’s current. Try to remember that time passes differently in the game world.
Give us the little details of yourself including mannerisms, habits, and appearances.
React as if it was really you in there and not just some construct of character sheet and modem.
You must love your character as you love yourself and therefore you must care for your character as you care for yourself.
Get to know the other characters and react with them on a personal basis. Remember the action in this game is the interaction between the participants.
Use all your imagination and act out in detail what you see.
DONT WORRY ABOUT BEING WRONG. We all are at times as it's part of the learning experience.
Know your character! Be able and ready to prove you are the best you can be.
Think.
Look at your maps often.
Make notes to yourself if you need to and for heavens sake make hardcopies of all the messages if you can.
Listen to the <DM>. Hear what I have to say.
And lastly be yourself. Your race and class are abstractions. What I want to see is the people.