An anamorphic drawing of a handball player created by Serbian artist Nikola Čuljić. [Photo/IC]

Serbian artist Nikola Čuljić, 30, has been drawing these amazing 3-D flatwork sketches, known as anamorphic drawings, for three years.

Čuljić, a self-taught artist, said: "I started with portraits and graphite pencils and when my skills improved, I wanted to try drawing something different. So I started to draw 3-D drawings, from the top point of view. With this new skill, I was able to create anamorphic drawings."