Progress!
As you see, the approach is again a little bit different from traditional papercraft.
I am focusing on the cockpit section for now.
I have added engine intakes - a last minute addition and it turned out a little bit unclean... but I am satisfied with the result so far.
The second large part is building up the hull. So far, it was just the general shape.
Since then I have added a layer to smooth and round the surface.
Next to the cockpit window you can see the first greenies of the third layer to add depth to the surface structure. In some places I expect to end up with 4-5 layers.