Take some cotton wool, place some glue on the base (where you want
the whispy bits to be) attach the cotton wool to the glue and leave it to set.
Later gently pull some of the cotton away. either leave it as is, or give it
a light spray (your choice, either hairspray or varnish) it is possible to
position it before the spray dries.
I had a nice bonus when our dogs decided to destroy their bed.
The stuffing was a lovely bright green. I use that for my ethereal mists.