Hallo, Can you help me with a small change to some

Hallo,

Can you help me with a small change to some of the text on the sign up page?
http://yourreikipractice.com/reiki-sites/

1. Would be great to put a little line space in between Your Site: and Site Title:

2. I would like to change Your Site: to be Your Site URL: (so it's clear for people)

3. Place a space after Username:

Can I do this myself or is this a change in the CSS? You guys have helped me with some custom CSS for similar changes on this page so I have included that in an attachment here.

Thanks in advance!

Justin