Another exercise: say "new" slowly, paying attention to what you tongue is doing before it peels off the palate for the "ew" sound.
The outcome is a kind of an N sound, but softer, as if you meant to glide into a "yu" or "ye" sound but did not follow all the way. Some people talk to babies in such soft lisp. There is a male voice on the National Public Radio that has that unusual soft register in his speech.
So his name sounds "Zhahk Paul MeeN" where N is that soft N.