How to draw like this?

Great poster! Are you going to frame it?

Practice

Take an art class. Some people are just born with this talent, other's need to be taught.

or take a photo and use the Fotosketcher program ( a free download)

This piece shows some fantastic talent! If you wish to copy it, practice doing each section until your skills are honed.

Borrow a projector and in a dark room project the picture onto a paper on the wall. Just follow the lines with a pencil and then take the paper down and do the shading with different types of pencils, from soft to hard lead. Blend with a paper towel or blending stump which will probably be included in a set of drawing pencils.