Flying likely uses wings (and gliding certainly does), so you are interacting with air (allowing banking, turning, etc), and you have gravity to deal with. With personal propulsion in space, there's nothing to turn against, only inertial thrust, and you probably don't have gravity either. I wouldn't consider the two at all similar. I would think it would be closer to piloting a spacecraft (same principles, smaller mass), or if there is a skill for maneuvering in zero g that would make sense too.