Hi, folks. I'm seriously considering writing a book on character design. This will not be a how-to-draw book, but rather will focus on way to create characters that you and others can invest in. Things like initial thought process, design choices, mood, nuance, and body language will be covered. Designing characters for others is also a topic I want to address.
That said, are there things some of you out there struggle with when creating characters, or otherwise would be interested in learning about?