It’s pretty easy to make the tassels. You set up your serger for a 3 thread rolled stitch. You serge until you’ve used up the entire spool of heavier thread. Oh, I forget what threads are required. One was heavier, and I think the other 2 were decorative. As you serge, you wind the chain onto a piece of cardboard. Once you are done serging, you wind the finished chain onto the tassel template. Tie off the tassel, and viola! you have a tassel.

Let’s see, you have to iron the tassel somewhere in there.

If it’s all still a mystery, and it should be, several serger manufacturers have tutorials on making serger tassels.