mimic pronunciations of native speakers

actually, each english sound has a unique mouth shape, if you want to have the exact pronunciation, you should pay special attention to the unique mouth shape when you speak the sound, ~~~~have a nice day~~~

just try to sing English songs in karaokes and, like Peachey said, imitate. "ye te dei, a er mai tu la bu er si seemed so far away..." - Beatles :D ps: absolutely no offence, trying to be funny here.

Exactly: listen and imitate! ^^