What are you interested in? What are your hobbies? What activities are you involved with in school?
If you have been on a mission trip, tell me about it. Where and when did you go? What did you do? What ministry was it with? Anything else you want to tell about the trip.
How are you currently growing in God? Have you been baptized? Do you read the bible? Do you come to church and youth group? etc.
Why do you want to go on a mission trip?