Upadharya: Make friends with American people atleast in your class or work , talk to 'em and learn what you've done wrong in pronounciation. No wonder nepalese don't have good accent because they are always with their own friends speaking their own language.  Don't be afraid that they will ignore you since you are immigrant. Try to talk 'em as friend and you'll find the best friend ever. They are hard to make friends but if made, they will never deceive you. Believe it or not.

PEACE

SIRUS