Hot Glue. The easiest way to glue tulle to itself is by using a hot glue gun. Hold the tulle open and add glue, folding the tulle onto the glue in layers if you are gathering a large group of tulle together.
Tulle tends to spring up and shorten, and tulle skirts look better if they are longer. You can always trim off a little bit later, but you can’t put it back on. Try school chalk or wax tailor’s chalk to mark the hem, as it leaves a distinct mark that is removed easily.
For very stubborn wrinkles, iron the tulle as a last resort. Lay the tulle onto a thick towel and place another towel over the tulle so the towels cover the tulle completely. Apply the heat of the medium-hot iron through the towel to remove wrinkles carefully. Never touch the hot iron directly to the tulle fabric.
Gorilla Waterproof Fabric Glue
A lighter fabric like tulle holds up pretty well to most fabric glues on the market, but you need a firmer-strength adhesive to keep embellishments on tulle in place.