'm already a good drawer butI want to get better.

doodle all the time just drawing little things that are floating around your head.
i used to do this through pe theory and citezenship lessons at school. it really helps.

also use a soft pencil 3B..4B

hope this helps x

Just draw ALL the time and everything! take your sketch book with you and just draw. you should accompany that with some books for specific drawing skills (Human Body etc') and of course you can take a class.

Well, I agree with most of the answers I've read so far; just draw and you get better. Your first big breakthrough, however, will come when you learn how to see. You should always start by drawing from life. Try to avoid drawing from photos or just copying another artist's work. Find something you want to draw and just look at it very closely. How does the light shine upon it? How are each of the parts proportioned? What kind of textures do you see? Ask yourself all these questions as you look at your subject and then experiment with differnent ways to creat the desired illusion on your paper.

Try to concintrate on "the message" behind the image and not the skill level.

Deliberately try to crappy. Even if it dosen't look like anything, What is the message your trying to say?

What does a Zig Zag line tell people?...maybe your telling people your feeling energetic. It's like having a conversation when other people see your art.

use butter