If you're seeing the disc actually moves away from the flywheel when the clutch is pressed, it's probably put in backwards. They usually don't move.
Is this a diaphragm pressure plate, or borg & beck? Can you see the clutch hub(where the springs are)? It should be towards the trans.
A couple of months ago I put a clutch in my wife's Liberty. It was interesting, if it was a 4 cylinder the clutch went one way, if it was a six it went the other.