very small amounts of worsted weight yarn
R 1: Ch 4, sl st in first ch to make a circle
R 2: Ch 1, 10 sc in the circle, sl st in first sc to close the circle (10 sc)
R 3: Ch 1, 2 sc in ea sc, sl st in first sc to close the circle (20 sc)
This part is a little tricky, and you may need to finagle your stitches a bit.
R 4: Sl st in the BLO of the next st loosely (because you are going to end up joining the petal here at the end of this round), *skip the next st, 7 dc in the back loop of the next st. Skip the next st, sl st in the BLO of the next st*, all the way to the end. You should end up with 5 petals of 7 dcs each, all in the BLO. Join with a sl st to the first sl st...or wherever it looks right. :)
R 5: Sl st into the FLO right below where you joined the back row. Now follow the directions for the back row of petals, but use 5 dcs in the petals, and make all your stitches in the FLO. Join to first sl st. Pass hook through to the back of the flower. YO, draw up loop, clip yarn, and fasten off.
Now, if you feel like it, add a little pizazz with a button or something.
I hope this is fairly easy to understand. It may look difficult, but I think once you try it, you will like it! Just remember it is essentially 5 petals of 7 dcs in the back loops, and 5 petals of 5 dcs in the front loops (a bit off-set though to add dimension).
Oh, and here is a picture of the flower in super bulky yarn: