Graphic novel

In preparation to possibly illustrate a graphic novel that a friend may or may not ever write, I am trying to learn how to draw in that style. I've read a few Frank Miller books and have started looking through others. What I've realized is that there is not just one style, but many. So I guess I will just have to figure out what style I am good at. My first goal is to draw realistic looking heads/faces. Here is one of my first attempts:





Once I get these down using pencil, I'm going to try my hand at ink.