This shawl incorporates the Deathly Hallows symbol at the points. You can see these yourself, as a matching pair, when you are wearing the shawl and look down.
The main illusion is designed to be viewed from the side. When someone looks directly at your back they will see only vertical stripes. The picture will be revealed as you move around. It would also be suitable to use as a panel for an afghan or as a wall hanging.
The shawl in the photos was made using DK yarn. It used about 400 metres (440 yards) in each colour for the main part, with extra for the edging and fringe. It is approximately 140 cm (55 inches) across, excluding the fringe. Any yarn could be used but a thicker, or thinner, yarn would change the overall size of the shawl.
There are instructions for adding a plain band or a fringe.
The original shawl is now on display at Ripley’s Believe It or Not! in St. Augustine, FL.