I find this a little hard to visualize without pictures. However the technique actually sounds pretty close to what I do so obviously I'm in agreement with the article, for the most part. If I prime a model black, I prefer to re-undercoat the face with white paint; just personal preference. I think the article could have gone further also, and described the different ways of handling eyes... for example, I've noticed there is a big difference between painting eyes on a Warhammer model and a Reaper model, as the latter do not seem to have the nice big eye sockets to work with, so they seem to neccesitate a different approach. You also said you "dot the iris with the black pen" - I believe this is a mistake and you intended to say "pupil" instead of "iris." Quite a good article overall.