Everyone gets nervous in their first event (or first few), that is normal. Just try to take in the experience and try your best, but regardless how the results go, feel the atmosphere and "take in" what it is like to be a chess player at a chess event
6 years old? Yes, it says so in your profile. The same concept applies. It doesn't matter your age. If you are going to a chess event for the first time, enjoy yourself and take in the experience
It will START in 15 October and end in 16