The ceiling underneath the rafters (hanebalken) is about done. the end still need to be done in order to be connected properly to the roof there. But the main thing is ready.
First everything had to be leveled as the rafters were not really at the same height. So with underlayment, a spitit level and some thread the base was laid out. Then laths were fixed to that structure so that finally the underlayment panels could be fixed to them.
