[Alexander Linden]

Honestly, How To Draw books aren't as great as looking at fashion magazines, manga with incredible eye candy, and photos in general. Observing people in real life is nice too, if people don't think you're staring at them. lol

Study other artists. Look at their tutorials, try to emulate artists with similar styles to your own, or styles that you would like to be able to do yourself. And then branch off from there and find your own style.