Almost all sports in which striking an object is essential (soccer ball, baseball, hockey puck, golf ball, etc.) follow the same mechanics:
- Ready Position
- Momentum Generation
- Follow Through
In the case of kicking a soccer ball, this occurs as follows, using a dead (stationary) ball as the example:
Typically you want to approach the ball at an angle. A quite common position would have you walk three steps back of the ball. If you’re right footed you would then take two steps to the left, or two steps to the right for left footed players. You now approach the ball with quick small steps and place the non-shooting (planting) foot beside the ball, the foot pointing in the direction of the shot.
As you plant your foot next to the ball you swing back the kicking leg.
The momentum comes from two movements. The first is the rotation of the hip necessary from having approached the ball at an angle. The second is from coming out of the backswing with the kicking leg.
Striking the ball with the right part of the foot is key. For a hard kick you want to strike the ball with the “laces” of the shoe. For a right footed kick it should be the left side of the laces, just above the instep. For a left footer it would be the right side of the laces, still above the instep. For low drives, strike the ball about half way up and lean over the ball (knee over ball). For higher shots (or cross field high passes) strike the ball closer to the ground and lean slightly back. Point the toes down (so the laces can make contact) and lock your ankle. You should lean forward
After striking the ball let the kicking leg follow through with it’s motion. Quite often the momentum may actually make a player jump slightly forward.
There are many YouTube videos but I find them all lacking somehow. Try the above mechanics and adjust to make them work for you. Then instruct your players who need help.