A direct counterattack demoralizes opponents because it stops an opponent's attack before it even gets off.
Counterattack as opponent begins approach footwork. For example, counter just as opponent steps behind lead foot for a sliding side kick.
Opponent's high attack mean a low target is open and vice-versa.
Counter attack kickers when they are on one foot because their balance is weak and they cannot retreat from the attack.
Do not acknowledge a point against you.
Vary your moves. Never use the same move more than twice in succession.
Keep moving. Move in a circle, in both directions.
If you do not have time to counter or block an attack, either step into the attack, to jam or smother it, or quickly sidestep and execute a circular kick before there is a counter.