it was my first experience of street painting. even using chalk for painting. although this makes less stress cause I could have a mistake and correct it. I started my work from morning for about 7 hours to complete this 18 square meters 3D painting. the result was not very bad for the first time. in the end, people came and surround it. my award was the satisfaction of those smile. 

People reaction in face of 3D painting 

You can see the progress of this painting in bellow.