Hi Richard. Nothing fancy with my windows I'm afraid. Each one is cut out from it's card wall, backed with any celluloid type material I happen to have, old packing material, shirt collar stiffeners etc, then the glazing bars are added as needed from slices of white or coloured, usually white, sticky labels. Lentils, sills, fancy brick surrounds and any further exterior decoration added as needed. Doing the windows this way they can be as plain or as fancy as you need, from old warehouses to country hotels. Nothing high tech on Barchester.