three masterpieces using their pens. This is all done with one single line. Luckily a video was shot by Eric Yeo as Chong he draws Girl With A Pearl Earring by Vermeer . Faber Castell from eric yeo on Vimeo . Related articles Faber-Castell Pen Portraits (design-milk.com) Single Stroked Spiral Illsurations by Chan Hwee Chong