First, I will answer your question. A cover letter is a one-page very short introduction to a subject. Every cover letter has one or more attached detailed documents. Think of it like the cover of a book - The cover has the title, author, picture, and maybe a brief advertisement like "7 weeks on the best-seller list!"

I have made a few comments and suggestions on your letter. It could be improved by being more specific, such as how long you worked as assistant director, and what degree you received (and when you finished). 

michael1stay

“

I am writing to apply for a (usually we say "the", for example "the position of Administrative Assistant" The indefinite article "a" is not so strong, meaning any position that might be available.) position of xx . ,  knowing xx is a company with a great reputation and one of the leading companies in Asia that makes me a good candidate for the continuous development of the company.(I don't see your logic that a company's reputation would have any effect on your being a candidate)

I appreciate Korea (what has Korea done for you personally to appreciate it? Usually we appreciate someone for their assistance or a gift they gave us.) , and the challenge that would be working in a foreign company.

I finished my studies as a steward recently and I have a proven success record as a responsible and a team player person working in a TV studio (or for a TV program) as assistant director, managing the crew and the actors for the director. I learned experienced how to handle situations under the pressure (of a tight schedule?).

Since I worked in my father’s private dentist clinic as assistant I have learnt a customer oriented personality (usually a personality is something you are born with, not something you learn) and being patient and comprehensive when difficulties come.

My language skills are growing, I have great score in the IELTS exam (English), and my first language is Spanish, but I’m willing to learn Korean and Mandarin in the future.

I believe that my working experience, my studies, and my highly motivated attitude make me a strong candidate for a place in the company.

I would be grateful if you would consider my application and I look forward to hearing from you. please contact me at xxxxxx, or email me at xxxxxxx. Thanks for your time and consideration.

”

Hello this is a new revised version following AlpheccaStars's advises, if anybody can give me an opinion,or how to make it better I will APRECIATE it very much.

answering to the previous AlpheccaStars's advise for :

"I am writing to apply for a (usually we say "the", for example "the position of Administrative Assistant" The indefinite article "a" is not so strong, meaning any position that might be available.) position of xx "

I understand what you mean and is a good point, but my doubt is because

I am writing to applay for the position - seems like there is at least one avaliable
                                      for a position - seems like there are no vacancies, so why am I writing?

that's why I wrote "a" instead of "the", because there are no vacancies.but I like "the" better.


this the new one.

Don't want to extend any longer but should I put my name as a title in the upper part of the page.
thanks ..

I am writing to apply for the position of flight attendant; (you need a subject for this sentence. it is better to make it a separate sentence. Also the passive voice is very weak.) is well known the reputation of xx company on efficiency as I like to be, efficient and positive.