I hope I am not hijacking this post with this question....if I am - I'm sorry.

My website is www.enchantingquotes.com.  I sell wall quotes and "wall quotes" is the keyword that brings me most of my business.   Moz Analytics is suggesting  "Use Keywords in your URL".  I understand how to do this for adding a new page or category.  What I need to know is how do I do it for my main page (so that my url reads enchantingwallquotes.com - I also own that domain).  Any help is hugely appreciated