The 3 types of storytelling techniques are as follows:
Synecdoche: It is the use of a part to represent the whole of something or vice versa.
Origins: It includes your audience in your story from the beginning. It’s better to actively interact with your audience and find what they need, what they want to read before writing your story.
Spoilers: It is a quick summary of the surprise element or the climax of the story to intrigue the audience for a complete read.