Good one person drills?

I'm a GS playing indoor netball (ie with astroturf and nets around the court). I'm planning on trying out for superleague and state next year, and I want to get some good training in. My local centre have said I can practice there any time I want. I can practice shooting by myself, but the areas I feel I need to work on are catching quick passes, catching angled/spinning passes off the net and breaking free of different style defenders. Any ideas on how I can work on these skills by myself?

You can practice ball skills by yourself just using somewhere with a wall. But I think breaking free from defenders will be difficult to do by yourself and I would say work on this on your own by improving your fitness and power to run from a standing start or change direction. All the drills you can do for improving core strength, footwork, balance and basic agility will all help you will all areas of netball, including those that you mention, so I would spend some significant time doing that and leave the practice of the particulars of getting free to when you've got a team to practice with.