Flower Drawing Part of a pen drawing of Cosmos and Sweet Peas drawn with a Rotring pen on smooth cartridge paper. - Part of a pen drawing of Cosmos and Sweet Peas drawn with a Rotring pen on smooth cartridge paper. Art And Illustration, Line Illustrations, Flower Sketches, Flower Drawings, Botanical Drawings, Floral Drawing, Flower Design Drawing, Doodle Art, Zen Doodle