Question About Changing Website Name

Finally got mine looking to where i can live with it.

What does anyone think!
http://2-angela-hobbs.artistwebsites.com/

Also, if I want to change my artist site address/name can I do that, and how will it affect everything
I have already done. I have a domain name, but don't want to attach it, just want to change the artist address
so it does not say 2 and my name.

I would like to change it to

http://digitalartcafe.artistwebsites.com/ or something similar, but am afraid I will
screw something up. Will it make everything I linked
(which is not a lot yet, some pins, and some FB, nothing I can't do over again)
cease to work, or mess up things on all the sister sites etc.

Please some feedback here, Lady Isabella, or anyone, please