Ok change one sentence.
Hello, let me introduce myself. My name is Surirat Inumpai, you can call me Am. I'm currently studying Community Management at Maejo university.
My most important personal attribute that would be helpful as a member of the Young Ambassadors is my commitment to always giving 100 percent to any job I'm given. When I start a job I am persistent and keep working at it until I'm satisfied that I've done the best I can. I have great interpersonal skill which allow me to work well in a team. I can also work well on my own without supervision.
My hobbies are using the Internet to learn new things, reading books and watching movies.
I would like in the future to have a career that is interesting and provides me with good opportunities for growth along with a good income.
Thank you for considering me for the position.