How can I write an application for a testimonial ?

Question : Write an application to your Headmaster for a testimonial. October 10, 2013 The Headmaster Charbairabi High School Haimchar, Chandpur Subject : An application for a testimonial. Dear Sir, I would like to inform you that I have passed the S.S.C examination from your school this year . I got GPA 5.Now I want to get myself admitted into a college and so I need a testimonial from you. Hence, I would like to request that you would be kind enough to issue me a testimonial and oblige thereby. Sincerely yours Md. Nasir Uddin Exam-Roll : Registration :