Julian Beever is an English artist who has been creating 3D chalk drawings on pavements since the mid-1990s. He makes his art using a projection technique called anamorphosis. When viewed from a particular angle, this technique creates the illusion of 3D.
According to the author, the “secret is to set up a camera on a tripod and keep it in one spot and check every mark you make. It’s really just playing with perspective to make it appear different to what it really is.