I don’t know about you, but when I was a child, I was taught to draw in pencil first. Then trace it in pen if desired. And you know what? I think it was great advice. In fact, I still do that now these days… sometimes. To be honest, I haven’t been drawing that much recently.
Anyway, you know that pencils come with erasers. If you make a mistake, you erase that. There are also erasable pens. But I haven’t used those since, like, fifth grade.
Yes, if you make an error with a permanent pen, you can’t remove it. But you can put white-out over it. I’ve been doing that a lot these days.
What I like to do is draw the basic shapes with light pencil marks. Next, I draw the main images with normal pencil marks. Then trace over them with pens. I finish by erasing the pencil marks. After all, no one is perfect. So pencil marks will still show unless you erase them.
I have drawn purely without pencils before as a child. That was fine. But those were drawings for personal pleasure. Not for school. Plus, I hadn’t received the full formal training for art, then. I took art classes at school. But they were required for everyone, including those with little to no artistic talent.
Once I got the formal training in high school and college, I don’t think I ever started drawing with pens voluntarily again. Sadly, these days, my hands sometimes shake too much. And because I don’t have an authority forcing me to start with a pen, I probably won’t return to drawing with pens only for a long, long time. I will still trace pencil lines with pens, though.