I tried to replicate the semi transparent effect of the wing when viewed from below. The wing undersurface was sprayed brown, then the ribs masked off with thin tape and Parafilm, after which I airbrushed the linen colour.
The Polish version had an enclosed gondola and a mottled camo pattern. The KP instructions showed a strange repeated digital pattern, which I thought was unlikely given the WW2 time frame... On the other hand I couldn't find any reference of the real thing so went with a hand-painted mottle.
In 1/72 scale the models are quite small and capture the frailty of the original design well. Uschi van der Rosten thread and Bob's Buckles turnbuckles were used for the rigging.