I photographed all the open canopy
parts from multiple angles and with a ruler in the picture. The
pictures were imported into Autocad where they were resized. The
areas to be masked were drawn over the photos and a dxf file from that work was used to cut the masks using a Silhouette Cameo Vinyl Cutter. I use Tamyia Masking sheets, much better to
work with than Oramask or other vinyl materials. There were a lot of individual window panes. Many of them needed adjustment after trial fitting, but that's the only way to get it right.