I recommend the file as well. I was very proud of my nascent pen technique (I never could get it right in AI) but couldn't figure out why the lines swooped and flowed as they did, especially those outside the panther. When I started to ink things in I found that where my lines started and stopped was not where the author thought they should be. As a result, my panther was a bit "patchy" - to say the least. In our defense, I don't recall the premise for the lines to have been particularly well explained. The files are fine, but I wanted to attempt the projects with just the instructions.