Breaking Down Both Illustrators Work

In order to understand how my chosen illustrators create their drawings, I have decided to start by breaking down the basic elements of their illustrations with the intention of building upon them stage by stage. The aim of this process is to identify the techniques used by both illustrators as this will help me when trying to reproduce their work.  I am going to start with Hanna Muller's illustrations before moving onto the work of Arturo Elena.