The easiest way is to do a circle and do 8 sc in it, join with slip stitch.
CH 1, do 2 sc in each ch, join with slip stitch.
CH 1, do 2 sc in 1st st, 1 sc in next sc, continue in pattern, join with slip stitch.
CH 1, do 2 sc in 1st st, 1 sc in next 2 sc; continue in pattern, join with slip stitch.
CH 1, do 2 sc in 1st st, 1 sc in next 3 sc; continue in pattern, join with slip stitch.
Continue this until you've reached the size you want. I'm at lovcya@leoncountyfl.gov if you have any questions.