Things that may not occur to you by just simply looking at an object. you need to truly understand these things to make your drawings work. Even if you don’t like your finished drawings, that really doesn’t matter, it’s the process of losing yourself in the craft of drawing that matters.
This Learn by Video course offers in-depth training on the interface, workflow, and features of Adobe Illustrator CS6. Amongst other things you’ll learn my own techniques for drawing characters including my “Illustrator” superhero. Here’s the intro movie where I tell you more about the course.