It just takes concentration.......and I'm thinking there's an error on row 5 or 6. I've done 2 repeats and each time I am 1 stitch short on row 6.
You might try a plain sock first. I did my first sock with the help of Silver's sock tutorial. The link has a link to it. It's great because it's full or large screenshots so you KNOW if you are doing it correctly.
Then, my 2nd socks was lacey and eaaaaaasy - after a while I didn't even need to look at the pattern. I can tell this latest one is going to take pattern looking all the way through.
Give it a try! Whichever one you go with first....socks are addicting!!!!!!!!!!!!