Hi
Thank you for favourable comments.
Report from building of this model with photos is on forum Konradus.
WWW.KONRADUS.COM - FORUM MODELARZY KARTONOWYCH - [R] Japonski samolot Ki-15 na bazie modelu Romana Vasilieva (Kampfflieger)
Framing for cabin transparencies is printed on sticky label paper and I used thin, flexible transparent foil.