Warrior General Games

I would like a little advice on how to improve my tackle

http://goallineblitz.com/game/player.pl?player_id=1248937

Strength:87.1
Blocking:55.1
Speed:29
Tackling:22.65
Agility:48.1
Throwing:8
Jumping:10
Catching:8
Stamina:34.65
Carrying:10
Vision:33.1
Kicking:9
Confidence:34.1
Punting:9

tons more blocking and agility.