bonjour,quelqu'un pourrait m'aider s'il vous plaît, merci

Dear Sir or Madam,
I am writing to apply for the job of car wash station in your part-times assistant.
I am 16 years old and I am in Hight School. I would really love to learn more about car, I am ready to work really hard and I would be great for the job. 
Thank you for your time and attention.
Sincerely,