nurbs clothes

hi,

I'm trying to model a character with nurbs. He's a magician so i'm trying to model something which looks like a suit type of jacket with shirt underneath. I'm inexperienced in modelling with nurbs so i'm not quite sure how to go about doing it. I'm especially having difficulty in giving the clothing 'thickness'. For example where the jacket would overlap or maybe where the collar is showing.
If someone could give me a few tips i'd be very gratefull.

Thanks.