I agree with John. Use great caution with restored aircraft, especially this one. It crashed so long ago that I forget the details, but I'm not sure how authentic it was.
Cc. the lines, I like the effect, but I'm still to be convinced. How could there be such overlapping when there are rivets only a few mm away from the border of the metal sheet?
In any case, I like what you've done so far, so keep working at it. The highlights are indeed a bit too strong.