You are right warper, as for language usage I too am better than the natives are.
With "jump in" I meant, the best way to learn is to live where you have to use the language for at least 2 years. The only way to get the subtleties.
Funny enough: I finally managed to be accepted as capable of being examined as a translator.
(which, without taking the rather expensive courses, wasn't easy to achieve)
Because I finished my education in German I'll be examined with my mother tongue (Polish) as "foreign". Feel free to cross fingers, tentacles or whatever for me