Thank you for your kind comments, much appreciated !
@ Warren: don?t Be afraid and start Jungwirth, this is about enjoying your hobby, not about competition -)
@ AngryJazz: the tolerantes are tight but not like with WNW (I built a WNW Focker D VII a few years ago), you hardly need to scrape anything off, everything fits well.
Now the lower wings and machine guns are attached. You don't really need glue for this, because it snaps together, almost like Lego.
I tried to depict the rib structure on the horizontal stabiliser and vertical stabiliser. It might need to be lightened up a bit later.

Cheers
Joerg