It’s extremely taboo in the American culture to correct the pronunciation of a non-native English speaker. There are good reasons for this. A few being, it comes off arrogant and intolerant, it stints conversation, and it would be frustrating for the speaker to be corrected constantly.
The unfortunate side of this custom is that for a non-native English speaker, you have NO IDEA if you are mispronouncing words besides the occasional, “What did you say?” or “Could you repeat that?”.
To get feedback on your speech by an American is rare and to get educated feedback is even more rare. That’s why the Pronunciation Pro Program includes personalized weekly feedback from a Masters level American trainer. It’s only when you understand the errors you are making and learn how to correct them that you can improve.

Go to PronunciationPro.com and sign up for 1 free week and get personalized feedback on your English pronunciation.