I've been a busy bee working on my knit panels for my afghan. I have completed two more panels in the past few weeks!
So far I have 10 finished panels. At the end of the year I'm going to lay everything out to determine how many more I need to knit. I just checked out the instructions again and it calls for 20 balls of yarn. I have 20 skeins of yarn, so perhaps I won't need to use all 20.
My afghan is going to be slightly different from theirs anyway because I'm using a different stitch and making the panels much longer. It'll be interesting to see how they all fit together!