This icon was made two years ago, when i was experimenting cartoonish style. Although it's not an icon i'm proud of, the shading is better than in ur troll icon.
Additionally, this icon was approved & judged by an experienced moderator.
Two years passed since i made the icon, not two months, time in which, i tried to learn by my own(reading tuts, practicing a lot, observing, not breaking moderators nerves and being persistent and impertinent, saying that i already know to draw very well, like some other person...), and i still have a lot to learn.