This is from Fabric.com
Mandy's Favorite 5-Petal Flower Pattern
Any size hook (depending on what size flower you want)
Any weight yarn
Rnd 1: Ch 5, join into a ring w/sl st in 1st ch.
Rnd 2: Ch 3 (counts as first dc), work 9dc in ring, join to top of ch w/sl st -- 10 sts.
Rnd 3: **Ch 2, work 3dc in next st, ch 2, sl st in next st** five times. Fasten off.
For a different color center, try changing yarn colors after round 2. Experiment with different weight yarns and hook sizes. To layer a slightly smaller flower on top, go down one hook size from larger flower.