You could start by showing them some popular and visually appealing comics. Like Marvel or DC series. Maybe start with a character they might be interested in based on their other hobbies or interests.
He might use his knowledge of the supernatural world. If a creature has wronged him, he could find its weakness and use it against it. Like if a werewolf has been too aggressive towards him, he could use wolfsbane in a non - lethal way to teach the werewolf a lesson. This would be a form of revenge that is also within the rules of the supernatural world.
In many fanfictions, Gryffindors get revenge by standing up for justice and using their bravery and loyalty to overcome the obstacles. They might also team up with friends for a strategic plan.
Try showing them some captivating snippets or quotes from the story. And tell them how it has impacted you or others who have read it. That might convince them to give it a go.
You could start by sharing a short story of your own to break the ice. Then, ask open-ended questions and give them the space to talk. A friendly and non-judgmental attitude helps a lot.
Well, one way is to clearly communicate your vision and the key elements you want in the story. Also, maybe offer some incentives or rewards to make it more appealing for them.
In some fanfictions, Harry might expose Snape's past wrongdoings to the whole school. For example, if Snape had been unfair in grading or showing favoritism to certain students, Harry could find evidence and make it public. This would damage Snape's reputation among the students and teachers.
First, you need to establish a strong motive for the revenge. Make the reader understand why the character is so driven. Also, create complex characters and build tension as the revenge plot unfolds.
They can gather evidence. For instance, if it's about a cheating partner, finding text messages or photos that prove the infidelity. Then they can use this evidence to expose the cheater to family and friends. This is a simple yet effective way.