Change Facebook Account Username After Limit

1. Create a Fan page with category "Artist, Band or Public Figure"  

https://www.facebook.com/pages/create/

2. Go to your Page Admin Panel & then cick  "Edit Settings" & Click "Update Page Info"

3. Find "Facebook Web Address." Click on it then you will get the option "Create a web address for a page?" Click on it. MAKE SURE YOUR FANPAGE GOT 25 Like !

4. Make your account username there on page web address & Click "Check Availability"

5.  It will ask you to transfer username. Click on it.

6.  After transferring it your username will be got removed from your account.

So, your username has been removed from your account & then go to your account settings and make a new username or don't make a username. https://www.facebook.com/settings?tab=account&section=username&view