Taking or catching a high ball is a real skill and a little bit more to if that taking a few bombs at training. Each bomb in a game is different, some float, some spiral and some do both. You must develop soft hands and arms and lwt the ball come to you, attacking rhe ball with hard hands and stiff arms cause more spills than takes. Then there's the protection approach, take a look how AFL players protect themselves when they approach to take a kick. The wind also plays a role, uts something we cant see or feel through the TV
But most of all confidence is a big thing.