i want to know how to get a nice finish on the face of my objects.
Send it out to someplace like i.materialize or Moddler or Shapeways. Seriously though, high-end finish requires high-end machines. Instead of making the models yourself, have you thought about selling them through the online stores at Shapeways or i.materialize? You wouldn't have to hassle with shipping. They do that.

Steve S