hey, not bad man, How old are you?
I started this stuff when I was 12, just curious.
I would suggest grabbing a more complex modeling package and start to use that. There are free versions of Maya (personal Learning Edition), the XSI mod tool, and Gmax.
www.tristangoodes.com
Don't let people tell you Software A is better than software B. It's stupid and ignorant. They're all the same. Some are just easier to learn.
I see you're using a cad based modeling package, Max would probably be your easiest transition. However, if you want to get into character stuff, I'd lean away from it and go toward XSI.
Anyway, Hope that helps...