10 tips to improve the way you speak English 

1. Observe the mouth movements of those who speak English well and try to imitate them. 
2. Until you learn the correct intonation and rhythm of English, slow your speech down.
3. Listen to the 'music' of English.
4. Use the dictionary. 
5. Make a list of frequently used words that you find difficult to pronounce and ask someone who speaks the language well to pronounce them for you.
6. Buy books on tape. 
7. Pronounce the ending of each word. 
8. Read aloud in English for 15-20 minutes every day.
9. Record your own voice and listen for pronunciation mistakes. 
10. Be patient.