Arches watercolor block, hot pressed, 18"x24"
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Liner brush, size 8 (you'll need a variety of liner brushes, size 2 and up)
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The orginal photograph for reference:
Cut up the details in each piece of paper representing a piece of glass, trace with pencil on the watercolor paper. Expect this to take quite a bit of time, it's a day's work.
Paint over the pencil lines with black acrylic. You can start light, and pass over a second time to darker until black. Be patient! This also takes quite a bit of time.