I draw up the patterns myself. Not like paper snowflakes, because they wouldn't withstand the folding required. Basically I lay them flat on a cutting mat and use a precision knife to cut out each piece.
“Can a magician kill a man by magic?” Lord Wellington asked Strange.
Strange frowned. He seemed to dislike the question. “I suppose a magician might,” he admitted, “but a gentleman never could.” — Susanna Clarke, Jonathan Strange & Mr Norrell