Tell us about yourself!
here's the image...
I also use a band saw (cardboard stacked) for cutting multiple shapes or massive numbers of similar items (like bricks).A quick & easy stiffener is a simple V bend with flanges to attach with hot glue on two edges - single thickness works fine for this and helps flatten items which may curve by painting only one side. Also used HVLP to apply a light coat of color to avoid getting too wet, resulting in cupping.Here are some projects used for party decorations over the years:
found this one:https://www.youtube.com/watch?v=yn4pUUa_Cms