English is a language skill.Practice often will improve your language skill.You can practice often by talking English to yourself.Listen to how you sound.Watch CCTV Channel 9 English news broadcast,and watch the announcer speak and mouth movement.Repeat what the announcers said and compare your sound with the announcer sound.Watch English DVD movie with subtitle turn on or off.Repeat the conversation to yourself and go back to repeat the same sentence.Most Po Tong Wah mother tongue speaker can improve their accent in the L and R sound.