At some point during college I had decided I wanted to get a job being a Caricaturist drawing at Knott's Berry Farm. I met with the main guy who trained people at the time. He showed me the technic they used with a bullet tip pen. He was really good but I could not get the hang of it.
I felt my own drawing was fine and that I didn't want to risk loosing what I already had. Looking back I can see now this guy really knew what he was doing and I should have taken his advice and learned how to draw formula caricatures.