This question is often asked by readers. my books in which there are patterns in full size.
The drawing can be copied both on paper and on plastic film.
Drawings are copied onto paper with a cutter (it is sometimes called a "copier").
But it's cheaper to copy the drawings on a wide plastic film, cat. sold in the household stores.
Stroke is done with a permanent marker, mistakes are easily erased with a regular cotton swab.
Read more: "How to work with patterns".