These are a dream to knit so far.  I took the liberty of reversing the pattern on the second sock so that the waves would lean the opposite direction.  Here is the link to the pattern and below are my specs on how to do the opposite sock.  I am making the large size and if you have the pattern you should be able to understand my modifications.  Enjoy!

Even rows, knit the knits and purl the purls.
1 – p1,k3,k2tog,k3,yo
3 – p1,k2,k2tog,k3,yo,k1
5 – p1,k1,k2tog,k3,yo,k2
7 – p1,k2tog,k3,yo,k3
9 – p1,k8