As long as your intention is pure, and you know what you're in it for, then you're alright. And I'm in it because I enjoy it. I take it seriously... real seriously. I mean I could sit and talk all day about the music.
German is more familiar now since I live part of the year in Rome and part in the German part of Switzerland. But it's not difficult to sing in German; it's difficult to feel in German. This takes time. It's a culture.