The first thing to do is to test for any pronunciation problems.

Usually there are only a few problems.

People think they have many but it is not true.

Also

Your ears have gotten used to hearing them and

think it is the right pronunciation.

You don't hear your problems, but....

Other people hear them.

To Be Almost Perfect.And you are so close but somewhere along the line,

You decided you were fine, probably because you were or are

better than everyone else around you. 

Maybe you don't know what to do?