Pattern for making a double ruffle cuff on longies/capris

Pattern Central
1

Any suggestions, points in the right direction?

Thanks!

2

http://www.straw.com/cpy/patterns2/socks/maizy-ruffled-socks.html
There’s double ruffles on these socks. The first one is cast on a zillion stitches then decrease down over several rows; the 2nd one the stitches are picked up then you make increases over several rows. You could do 2 ruffle rows the 2nd way.