I use this, but its easier to to on paper, I usually don't draw on the computer so if its sloppy forgive me, And if yours does not look perfect then fix it up a little. And I would say if your not good drawing on the computer,do it on paper!
DragoArt members upload artwork and drawing tutorials! They are also allowed to leave comments on tutorials, profiles, etc. Many more features, as well; it's way better than just being a boring guest!