I don't think people understand its not the pen that does all of this. It's the hard work and practice upon practice of many hours in your day, learning the skills and how to use the pen and strokes, etc. it's not just the pen.
The medium in this looks like chalk or Lino print which I think is a refreshing idea from digital based typography. The intricate detail conveys the message of the text well. I also like how the long thin serif font runs along a curved baseline.