I suggest to download the f2p City of heroes and use their far superior to hero machine character creator to build the looks.
I f you describe me what you want to look like I can create him/her for you and send an image...
No SW specific aliens available though
In SW:TOR I now run around as a red Sith Twi-lek named T'leek... But thats not me... its a female...
Not sure if I am more Sith or Jedi still.. even if all my rp / game toons are evil. I think I would end up a grey Jedi... emotions are strong but controlled. And at this point I see this thread as making who you are into the SW universe.
I think I will use SW: TOR to make a toon.. then print screeny... and redraw that image with the things I want to alter and my lightsaber of choice.