Anja,
A very nice build.
If you're worried about one plank, I am never going to post any of my builds here. Yikes!
Now I know what I'll be getting my father-in-law for Christmas. I got him the MS Bluenose a couple of years ago to get his feet wet in the hobby, and the darn guy has done a better job on it than I did on my first build. He also concurrently built the MS Bounty launch and it seems like he's about done with both.
The Half Moon is perfect for him because he's something like the great-great to the 39th power grandchild of Cornelius Mey, the Dutch explorer who gave his name to our Cape May down here. While I don't think Mey ever sailed with Hudson (though my wife told me early in our relationship the family story is he was the navigator for Henry's first trip to the New World) I think a Dutch jacht would be something he'd enjoy building and now I can steer him to your fine build for help and advice.
I can't wait to see how the rest of your build progresses.