Record your own voice and listen for pronunciation mistakes.
Many people hate to hear the sound of their voice and avoid listening to themselves speak. However, this is a very important exercise because doing it will help you become conscious of the mistakes you are making.
* Be patient.
You can change the way you speak but it won't happen overnight. People often expect instant results and give up too soon. You can change the way you sound if you are willing to put some effort into it.
The following are some book references to help you improve your oral English:
- Spoken English by R K Bansal and J B Harrison
- Pronounce It Perfectly In English by Jean Yates, Barrons Eductional
Series.
- English Pronunciation For International Students by Paulett Wainless
Dale, Lillian Poms.