I`ve managed to paint, put the decals on (they work like a charm - Cartograf - and everything is clear
). I`ve also fixed the fittings and made the stitching. I was trying to figure out how to do it painlessly and reached the same conclussion as Jorgo that the best way is to drill holes and thread the fishing line through.
Now I need to fix the upper wing, no worries though since everything fits well.