1. A method of forming an image, comprising the steps of: providing a substrate; coating at least a first region of the substrate with magnetic flakes, each of said magnetic flakes having first and second opposing substantially parallel sides; aligning the magnetic flakes within the first region so that their opposing sides are substantially orthogonal to the substrate by exposing the magnetic flakes coated on the first region of the substrate to a magnetic field oriented in a predetermined direction; and, impressing magnetically oriented flakes within a sub-region of the first region to change alignment of flakes within the sub-region so as to form an image in the first region, wherein flakes within the sub-region have a visual appearance that is different from flakes within the first region outside of the sub-region.