@nataliarkri you should use 2m(200cm) of string then fold in half to make 1m string to knot the pattern. You can also go on YouTube and watch mashaknots or Alex's innovations to understand better. Hopefully it helped.
I just finished this one! One of my strings ripped so it’s a keychain, but I’m going to try again soon. I posted a pic, it should be up soon! I love this pattern so much!!