These blocks worked up quickly - rows of triple crochet will do that. I really like the center motif, which looks more like a snowflake than a star. I wasn't sure if I would like the long single crochet in the last row, but it provides a neat edge effect.
Pattern: Patriot Star by Melinda Miller, June 2011 Unique Sheep Crochet Block of the Month
Yarn: Verve in Red, White and Blue
Hook: 2.75 mm