"Years ago Dave Gierke wrote a great "how to" in one of the model mags."
I whole heartedly recommend this article also. Maybe it could be scanned and posted somewere. Ink lines are like using and airbrush, once you are euquipped with the tools, the next best thing you can do is practice, practice, practice on plain paper or and old model. The the tricks, hints and kinks are mentioned in that article.
Good luck and have fun,
Dan McEntee