Drawing of John Barr's famous Copper John nymph. I was really happy with the way the peacock thorax and the copper wire turned out. Actually, it looks better than the Copper John flies that I have tied! This drawing, like the majority of my fly fishing illustrations, was done in a vector format, using Adobe Illustrator. A vector drawing can be enlarged to basically any size without any image quality loss, so this image will look the same whether it's small or rendered poster size.