you should try the Vaa as well.
http://voiceactingalliance.com/board/forum.php
i started there and another place with just a headset. after my first mod however ( because i wanted to keep doing it) i was able to get a better mic.
your voice is fine. it is the mic that will hold you back from many voice work chances.
also, like others have said get a sound cloud or make videos of some voice work. things you make up or you acting parts from things you like. people will base your work off what you post so if you have nothing there is nothing to base it on. then after you start getting work.. you can use that as your examples XD
good luck!