The original pattern was designed by Nancy Tracy of Be-Stitched, but I have modified it a bit - added a repeat to make a 6-pointed snowflake instead of a 5-pointed flower, added a picot at the tip of the "petal", and omitted a picot or two from the "fluffy" part of the pattern.
I really like the central star, but it's obscured by some picots, and some of the picots in the "fluffy" part overlap each other which always annoys me, so I tried it again with my original variations but removing more picots.
I'm not sure which one I like more. Either way, this is a fun little motif and was quick to tat, and would make lovely 5-pointed flowers in colored thread as well as a snowflake in white. I found it helpful to use a gauge to ensure the long chains were all the same length (I tat on the bus while commuting and it sometimes has negative effects on chain tension consistency).
I got the pattern for free by being subscribed to her newsletter, but it appears that instead of putting this pattern on her extensive pages of free patterns (
here) she has listed it for sale in her store (
here). If you wish to subscribe to her shop newsletter to get other free patterns in the future, follow the instructions on her website.