Cyanotype is a photographic printing process that produces a cyan-blue print. The process uses two chemicals: ferric ammonium citrate and potassium ferricyanide. A photogram process is a photographic image made without a camera by placing objects directly onto the surface of a light-sensitive material such as photographic paper and then exposing it to light.
The technique is sometimes called cameraless photography. I would like to say that I draw with sunlight.