It makes sense but it’s a bit hard to explain because I do it automatically. It’s a question of habit. I don’t like strong outlines for the nose because it creates a kind of “Miss Piggy effect”. The nose looks like the one of a little pig and it’s the only thing you can see. It’s also too “cartoon”. Not outlining the bridge of the nose is more subtle but YMMV. I outline the shape of the face, the eyes, the nostrils, the mouth (but not the lips). For the rest, I work with very very small strokes on several layers.I also crosshatch a lot.
I hope it made sense too :/
I know you said earlier that you made some lines that turned invisible when you scanned the sketch- but just how much detail do you put into a rough sketch of a face? Like, do you just make vague lines of where the eyes/nose/mouth will be?
I make vague lines for the eyes, nose and mouth. Then I darken them and make them more precise (I didn’t scan that part, you only see the step with the nose visible), then I ink with the pen. Basically, I do the same thing with the body and the face. I draw the contour of the face first, then the nose, then the eyes and finally the mouth. I know that a lot of people start by the eyes but I must admit that my real starting point for the face are the nostrils :S
Did I answer your question? :)