There are a couple of
different kinds of water-soluble stabilizer.
One is clear and plastic, and that brand is
Sulky Ultra Solvy.
The other is soft and
fibrous, called Vilene. Both will work very
well. Vilene is used in this demonstration.
Use a size 11 or 75/11 sharp
sewing needle. A sharp sewing needle has a
smaller, finer point than an embroidery
needle. That means it will make smaller
holes in the stabilizer.