I'm over halfway through my course on book design and development through the makeartthatsells.com site. The course is run by artist representative Lilla Rogers and Art Director of too-many- books-to-count Zoe Tucker. The advice and help has been stellar. Especially how to pitch a book and what's important to art directors of books.
Week 1 - pick a script and start drawing the character.
Week 2 expressions.
Week 3 - poses
Testing technique and finishes.
Final submission for week 3 poses. Going through a variety of angles and poses as well as expression.