The first step is a bit time consuming. but is great to do over a a cold weekend in front of the fire place.
pick a image\pattern\anything,
Print it and paste on a harder material, i used flexible plastic. cart-board or on old projection slide work just at well. once it is pasted and cut comes the long part of stitching a thread using the cut image as a guide. just circle throw, until no image can be seen. for the background use a fabric of your choosing.