It’s hard to believe the precision and skill that renowned artist David Walker possesses, as exemplified through his graffiti work. The London-based visionary, who opts to use cans of paint in lieu of a paintbrush or some other conventional tool for applying color to produce an image, proves that spray painting can be considered a fine art rather than an act of urban vandalism. The artist completes each of his works without so much as the accompaniment of stencils to guide the bounty of colors he incorporates in his portraits. His latest work features his signature explosion of hues on a large-scale canvas in Shoreditch, London that is nothing short of breathtaking.