In 1900 the man who wrote Oz published a snowstorm recipe: cotton wool, mica and 4 pounds of goose-down. Fake frost was the product. 93 to trace.
A wet stone shows its markings. A dry one hides them, in exactly the same places. Every design here starts with that 10 seconds under the tap.
Nobody in the trade ever drew on glass freehand. They put the drawing behind it and followed the line. 89 outlines to slide behind yours tonight.