Here are a few of the early thumbs I did for the Scare Crow. I always like to begin the whole process of character design with small ideations, to quickly explore the various directions a specific character can go.
A great part of this process for me is when I exhaust the ideas and directions in my head, and that forces me to step into directions that I'm not used to or that are new to me. I get to learn new things about the subject, and a lot of times that is when some of my favorite designs are created.