Different colors of tulle will give you different effects. I've not used Susan Carlson's method but have used Soft fuse, a very light fusible. I use the tip of my iron to tack the pieces in place until I've determined the proper placement and then give it a final fuse. Once my collage is done, I layer and quilt line vertically and horizontally 1/2" - 3/4" apart using a 50 weight thread. I use an 80/12 or 90/14 machine needle depending on the number of layers. But Soft Fuse is so light that most of the time an 80/12 needle works fine. By using fusible, you can layer everything on parchment paper and have your pattern under the parchment for guidance. I've made several collage quilts. I am jealous of the rooster photo. LOL Hope I've helped a bit but feel free to PM me if you have any questions.