Check my grammar and spelling please:)?

Pls check and correct me answer.
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When I was in school , I like to studied English subject especially conversation course but I am shy.
had only one friend in the class she can speak very well because her dad is American.
I wanted to improve my english specially spoken english.
so I had decided to take class and learnt more English at AUA language center till end of courses.
After that I applied a job for Air Hostess at Japan Airline but failed. I think it's very good experience for my life.
Though, I am not fluent in English but I was not upset because my job always concerning in english such as email correspondence, document file or
telephone. I can improve it everyday.

When I was in school, I liked to study English, especially the conversation course. Because I am shy, I had only one friend in the class. She speaks well because her dad is American.
I wanted to improve my english, especially spoken english.
I decided to take a class to learn more English at the AUA language center.
After that I applied for a job as an Air Hostess at Japan Airline, and though I failed, I think it's a very good life experience.
Though I am not fluent in English, I am not upset because my job deals with english such as email correspondence, document file or
telephone and I am improving everyday.

throw it out and start over.

too much run on sentences

When I was in school, I liked to study English. Especially a conversation course but I am shy.
I had only one friend in the class, she spoke very well because her dad is American.
I wanted to improve my English skills, especially spoken English.
That is why I had decided to take classes to learn more English at AUA language center until end of courses.
After that I applied for a job as Air Hostess at Japan Airline, but failed. I think it's very good experience for my life
though, I am not fluent in English. I was not upset because my job concerns English such as email correspondence, document file and telephone. I can improve it everyday.

When I was in school , I liked studying English. I especially enjoyed my conversation course, although it was difficult for me because I am shy. There was only one student in the class who could speak very well, but that is because her father is American. I decided to take a class at the AUA Language Center to further improve my English. After this class, I applied for a job as an Air Hostess for Japan Airline. I was turned down for the job, but I learned from this experience. I am not upset that I am still not fluent in English because I can always find another job, such as an email customer service representative, a document reader, or call center employee, so I can improve my speaking skills everyday.

When I was in school, I studied English in a conversation course. I had only one friend in the class. She can speak English very well because her dad is American. I wanted to improve my English, especially my spoken English, so I took this class at AUA Language Center. After that, I applied for a job as an air hostess at Japan Airline but failed. I think it was a good experience for my life, though. I am not fluent in English yet, but I am not upset because my job only concerns English in E-mail correspondence, document file, or telephone, so I can improve it every day.

When I was in school, I liked to study English especially my conversation's course but I am shy.
I had only one friend in the class. She spoke English very well because her dad is American.
I wanted to improve my English specially oral English.
I decided to take courses. I learned English at AUA language center until the end of courses.
After that, I applied a job for Air Hostess at Japan Airline but failed. I think it's a very good experience for my life.
Though, I am not fluent in English but I was not upset because my job always concerned English such as email correspondence, document file or on the telephone. I can improve it everyday.