They are done on an embroidery machine by a pattern using water soluble stabilizer. Very easy.

Thanks everyone.......all your information has helped me....I found a web site that shows all the steps...and I do have an embroidery machine so these look like there going to be easy....I just have to get my act in gear and hopefully get some done for xmas.....hugs to all....Trish :)
The web site was embroidery library projects

Hi
I have made over 50 some freestanding lace snowflakes this month, and a few ornaments.
I use fibrous water soluble stabilizer,two layers, and sulky emb thread in my bobbin and thread it. Slow your machine
down, I put my Elegante down to 350 speed.
Embroider the design. I dip the finished project in slightly hot water until the stabilizer dissolves, pat it dry, and I put
it on wax paper to dry. Then I iron it, as they sometimes dry not flat.
I am spraying them with silver spray glitter for sparkle, just gorgeous!
I got my snowflakes from embroidery ibrary.
Bev