Hi, I am working on upper deck windowed walls the ones around steering wheel. I scratch build them as I was not happy with what Mamoli provided in the kit. I made windows of Polyethylene sheet. Polyethylene is quite different from PVC. Now I have a problem as to how to show a window framing on these windows. One of the ways I tried is simply draw a crossed lines with the black Sharpie permanent marker. See below. I however look for a bit more realism. I tried to make framing from carton, had it painted brown and tried gluing it to Polyethylene plastic with a white PVA glue. No chance. This glue does not stick to it. Goes right off! I was thinking of CA (cyanoacrylate) glue in a gel form - the one as a "Krazy" glue. This thing did not work for me as it is way to sticky and cures instantly. I am afraid ruining weeks of work on my walls. I need help. Does anyone know some better ways to do this work?