I’m not sure how you’d go about at creating a turn table to have as a modeling sheet, but I bet if you already made some cool drawings with poses, you can probably achieve technical drawings of your character in orthographic view. Here’s some short courses I could find that hopefully contain the information you’re after, fingers crossed:
https://cgcookie.com/courses/piero-animated-character-concept
https://cgcookie.com/courses/creating-characters-where-to-start
https://cgcookie.com/courses/character-design-process
