Puffer Fish watercolour sketch March 19, 2018 By Stuart Green in character sketch, drawings, Illustration, moleskine, pencil, picture book, sketchbooks, Sketches, stuart Green, The Cleaning Station, watercolour No Comments Tags: character sketch, drawing, Illustration, pencil, picture book, Puffer Fish, sketch, sketchbook, sketches, stuart Green, The Cleaning Station, watercolor, watercolour A quick Puffer Fish watercolour sketch. Another character to appear in my picture book; The Cleaning Station.