The keys to good blocking volleyball skills are positioning, timing, and movement.
To be an effective blocker, you need to stay in a balance position ready to anticipate.
Good blocking volleyball skills consists of moving into good position to jump up and penetrate the net with your hands and arms to deflect or block your opponents attack.
Keep hands up and feet ready to move
You want your hands up rather than at your sides so that you can quickly get them above the net to block. Also, by having your hands up you are less likely to brush your hands with the net as you jump up.