This isn't the best picture, I'm a horrible photographer.
I was edging some flannel and wanted to echo the star motif on the blanket, so this is what I came up with.
Size 10-30 thread (model done with size 30 thread)
Size 7 hook 1.65 mm
Cluster: *Yo, insert in indicated st and pull up loop, yo and pull through two loops on hook*, rep twice more, yo and pull through all 4 loops on hook - three dc clustered together.
Round 1: Sc around.
Round 2: *Ch 3, cluster in next sc, ch 3, cluster in first ch, sk 3 sc and sl st in next sc, rep from * around.
Round 3: *Ch 3, cluster in sp between top of two clusters on row 2, ch 3, cluster in same space, ch 3, cluster in same space*, rep in between top of each pair of clusters in row 2.