There are a few blocks on the Green Man quilt that have added stuffing, today let's look at Trapunto, an Italian way to add extra texture.
Basically, you need the top fabric, a sheet of batting (high or low loft), small balls of extra batting, and a sheet of thin backing fabric, e.g. gauze:
The leaves of the Green Man are densely packed with batting and there is dense quilting around him, as you can see.
I have also added a bit of interesting information for you:
Shannon Brinkley talks about the background of Trapunto quilting. Have a look at the beautiful Tristan and Isolde quilt. Shannon also shows examples of Trapunto made by machine.
The second piece of information is this YouTube video where the quilter is simply poking a hole in the back and pushing in the batting, no need for suture!: