Becoming a comic artist/author

I think becoming a comic artist is a bit harder in America as opposed to Japan (I don't know about other countries) but it's still do-able if it's your passion.٩(๑❛ᴗ❛๑)۶
Here's a short list of webcomic "mangakas" I know of who make comics for a full time job:
Minna Sundberg, http://sssscomic.com/index.php?id=about
Yuko and Ananth (I'm not sure about their last names),http://www.johnnywander.com/#_=_
Isabelle Melançon, http://namesakecomic.com
Zack Morrison, http://www.paranatural.net
Ryan North, http://www.qwantz.com/index.php
Abby Howard, http://www.jspowerhour.com
Tom Siddell, http://www.gunnerkrigg.com
I hope this will inspire y'all (●'◡'●)ﾉ