Tip 1: Each opponent should use a different way of attacking the hero’s weakness.

The antagonists' strengths should be the protagonist's weakness.

Tip 2: Place each character in conflict, not only with the hero but also with every other character.

The hero and villain shouldn't be the only ones in conflict. Villains can conflict from the level of conflict they have with the hero or methods.

Tip 3: Put the values of all four characters in conflict.

Pushing conflicting values is a hallmark of compelling stories. It's one thing to differ in method but if characters differ in philosophy, then the conflict grows.

Tip 4: Push the characters to the corners.

Pushing characters into corners is making them as different as possible. You can have 1 protagonist & 3 antagonists. Make the difference as compelling as possible.

Tip 5: Extend the FOUR-CORNER pattern to every level of the story.

Use the 4-corner pattern throughout the story.

Example, use it to plan each act. Act 1 could focus on 1 conflict, act 2 on another, etc. The 4-corner method ensures you will have conflict in your story and keeps the audience engaged.