When I do digital art, I tend to work completely within the medium.
Since most lines are going to be covered over and repainted anyway, there's no point in scanning in accurate, traditional line work.
Another thing is that, for the most part, digital art isn't necessarily all that different from traditional art. My weaknesses in both mediums are the same. My drawing techniques are the same. Digital art doesn't enhance someone's artwork any more than what their skill allows for. My tutorial, therefore, isn't going to shed any light on any amazing secrets, and thus there was no point in my making it. . . but I did so anyway. Oops.
Art tutorial main page