First off I used some white yarn, which I already had, and twisted it and tacked it onto the edge of the pillow. I also added some handmade tassels.
Than, I created a template by using sticky labels and cutting out the design I wanted, It worked a lot better than just plain old paper because it adhered to the fabric and the paint didn't run under. (at least not much.)
I than used white acrylic paint to fill the stencil in.
Once the paint dried, all I had to do was peel off the stencil and there was my pretty pillow!
I've had this pillow for over a year and it has worn pretty well, I used inexpensive materials, so it won't last forever, but part of the fun of throw pillows is being able to change them out.
Hopefully this inspires you to make your own wonderful throw pillow.