Jack Frost Snowflake designed by Darlene Polachic, published in "Big Book of Tatting" by House of White Birches. I know snowflakes should have 6 points, but I'm a sucker for arches. The picots in the center were bumping into each other and annoying me, so I tied them together into a little star in the world's simplest application of needlelace.
Turns out this is yet another out of print tatting book. It has some nice patterns but is not something I'd recommend spending a lot of money for. Weirdly, the cover image below is not the same cover as the Amazon page itself or my copy of the book. Not sure what is going on there.