Letter to your elder brother asking him to suggest ways for improving your English pronunciation. 

 My Dear Brother, 
I trust this finds you all at home in the best of health and spirits as it leaves me here. 

 I want to give you some trouble. I find that my English pronunciation is too weak. I pronounce even common words wrongly. Other students in the University have good pronunciation. They speak English very well. In comparison, I cut a sorry figure. I am often put too much humiliation. I feel that I will never get good marks in any interview. 

 I, therefore, request you to suggest me the letter tips so that I can improve my pronunciation. I am sure your advice will be very beneficial for me. 

 Convey my respects to father and mother, and love to younger brother and sister. 

 With respects, I am.

Yours affectionately, 
XYZ