Hello to everyone!
I want to let you know what I've done for the last weeks. First I tried to install my window frame to the cockpit. But it turned out that it was not only very difficult to orient. I had also many problems to find a solution to keep it at its final position.
So I decided to make a new design with three specifications. A flat top structure to give good support for the ceiling that will come some day and horizontal bottom linings to make it easier to design posts for holding the whole thing. Also it had to be splitable into three parts. Believe me, creating this thing was my most challenging sketchup work I've done so far.
So I will start the build process now and hope to come out with a new video soon.