If you have some incentive, you can get the practice. For instance, the Danish princesses have pretty good accents, having come from IIRC Hong Kong, France, and

If you have some incentive, you can get the practice. For instance, the Danish princesses have pretty good accents, having come from IIRC Hong Kong, France, and Australia. It's not that the information is secret, it's just not a focus. I had a Mandarin teacher who was very good at explaining exactly what shape to make with your mouth/tongue for each sound. There's gotta be a summary for most languages somewhere, I just haven't found them.