Letter to request for exemption for certain subjects

Please some one correct me the mistakes of the letter below.

Dear sir,

I am writing this letter to request for exemption for the subjects i have studied in my diploma. i have studied 9 (nine) modules in the diploma. As a part of my carrier development i am intending to enroll in Bachelor of business administration (hons) degree program that you college is currently conduting. further, i have 15 years of experience in the office enviornement.

Herewith i am enclosing syllabus of all the modules with certificates.

Yours, sincerely

mohamed.

I am writing this letter to request for exemption for the subjects I have studied for my diploma.

I have studied 9 (nine) modules in the diploma.

As a part of my career development I ---Always capitalize 'I'!---am intending to enroll in Bachelor of business administration (hons) degree program that your college is currently conducting .

F urther, I have 15 years of experience in the office environment.
Herewith i am enclosing a syllabus of all the modules with certificates.

Good luck with school and have fun!

:)