Mistake making starter

Toast

I'm using the recipe (Starter - Sourdough 101) on this site to make starter. On the second day, I mess up. The site say to add 1/4 cup of flour and 1/8 cup water, and I put 1/8 cup of flour and 1/4 cup water. What should I do?

You can add more flour OR in In the next addition, add flour but no water.  

Being under a blanket of water will help things speed up.  If you see a definite separation of water, carefully pout some of it off to reduce the amount before adding but it really doesn't make a big deal of a difference.  Give it a swirl or two and  don't worry about it.  :)