Not a silly question at all! If you look at the complete tutorial over at Deja Vue Designs, scroll down to the image just below Step 11. You’ll see a trimmed up pom-pom with the longer yarn threads — used to tie up the pom-pom in Steps 3 through 8. Don’t cut those off as that’s what you’ll use to secure each pom-pom to the twine! (I’ll edit the tutorial to better reflect this, so thank you for your good question!)