Here’s all you need
Wrap the twine around the cardboard 20 times and cut the twine.
Cut a piece of twine for the tie. About 8” long.
While the loops are still on the cardboard, slip the 8” piece of twine through the loops of the top of the tassel and tie tightly in a double knot.
Slip the tassel off the cardboard.
Thread both ends of the tie through the eye of the needle.
Then thread through the bottom of the tassel.
Pull through the top of the tassel.
Remove the needle.
Pull the loops snuggly into the tassel form.
Tie a knot.
This is what it looks like.
Cut the bottom loops.
Trim off the bottom to your desired length.