Writing 'x reader rough lemon fanfiction' requires a lot of planning. You should have a good plot in mind. Since it involves 'x' and the reader, you can play with different scenarios like a forbidden love or a chance encounter. Regarding the 'rough lemon' elements, it's not just about adding sexual content. It's about creating a sense of passion and intensity in the relationship. You can use descriptive language to convey the emotions and actions. However, keep in mind that this type of fanfiction may not be suitable for all audiences, so be sure to label it appropriately if you plan to share it.