I continued the build with a lot of stairs of the Lasercut-Detailset.
I tried different ways to assemble those, but the easiest way for me is the following:
First I cut out half of the stairs and fold it in the correct angle:
Then aplly glue and turn the steps into the right position:
And finally glue the other side to the steps:
Stairs attached to the ship:
Only one pair of stairs don't fit, I have to figure out how to deal with it.
And now it's time to fill the empty white spots on the main deck: