you might want to look at some of the work in progress for making characters I know a few members here that can help you with that hmmm. Andy has done a few and luuckyy has done some good ones you might look at there topics on work in progress or tutorials and how to.
BTW I also am using autocad though its a new program for me I really enjoy what it can do only I wish ac3d had some of autocads functions. it would make modeling easier