A method and a system for producing a window shade having a real natural material printed image coated thereon. A real natural material is scanned and the data of the image is stored in a computer which generates an image of the scanned real natural material. That image is duplicated a plurality of times by the use of the computer and the images are assembled in a predetermined arrangement to produce a composite image which is then enhanced using photo-enhancing software. The enhanced composite image is then printed by the use of a colored ink printing machine on material to form the window shade. Preferably, but not exclusively, the material is constituted by slats of a louvered blind or a fabric of a roller blind.