Change Home folder name?

On my old MBP, my home folder (/Users/username) was just my first name, with a capital first letter. On my new MBP, it is firstnamelastname, all one word, all lower case. How can I change it?

I tried this, but I still can't edit the name.

Never mind, I figured it out. Didn't realize you had to log out after enabling root, then log back in as root. I thought enabling root made you root, like adding sudo to the front of everything you did.