Begin with creating a mood. If you want a romantic and somewhat tense mood, describe the scenery in a way that reflects that. For instance, if it's a stormy night on the island. Then, introduce the characters' emotions towards each other. Gwen might be secretly attracted to Duncan but trying to hide it. Duncan, on the other hand, could be more forward in his interest. Develop their relationship through dialogues and small interactions until it reaches the climax of the kiss.
First, think about what aspect of Gwen you want to focus on. Is it her powers, her personality, or her relationships? Then, come up with a simple plot idea. For example, a day in the life of Gwen where she has to deal with a small - scale problem using her powers. Just start writing down your ideas, don't worry too much about grammar at first.
Another concept could be a time - travel fanfiction. Gwen somehow travels back in time to when Duncan was a younger and more vulnerable version of himself. She helps him through a tough time, and he sees her in a new light. This new - found connection culminates in a tender kiss.
To start writing a Gwen 10 fanfic, you should begin by thinking about what makes Gwen unique. Her powers, her personality, and her relationships are all great places to start. For example, if you want to focus on her powers, you could think of a scenario where she has to use them in a new and challenging way. Then, you need to establish the setting. Is it in Bellwood? Another planet? Once you have these elements, you can start writing the first draft. Don't worry too much about making it perfect at first. Just get your ideas down on paper. You can always go back and edit later.
First, think about the setting. It could be something like their home in Mewni or Echo Creek. Then, consider the emotions they are feeling. Are they nervous? Excited? Once you have these basics, you can start with a simple opening like 'Star and Marco stood in the garden, the air thick with anticipation.'
You can try some popular fanfiction websites like FanFiction.net or Archive of Our Own. They have a large collection of fanfictions, and you can simply search for 'gwen and duncan' in their search bars.
First, you should think about the relationship between them. Decide if it's going to be a romantic relationship or more of a platonic partnership. Then, come up with a basic plot idea, like a problem they need to solve or a journey they need to go on.
You can also start by introducing a new character who challenges their relationship. Maybe a new girl has a crush on Billy and Mandy gets jealous. In the heat of an argument to claim Billy as her friend (or more), she kisses him. This would create an interesting starting point for the fanfiction.
First, you can start by creating a detailed setting. Decide where Eddie and Patricia are when they kiss. Is it at school, in a park, or somewhere else? Then, think about their emotions leading up to the kiss. Are they nervous, excited, or something else? For example, if you want to create tension, you can write that Patricia has been secretly in love with Eddie for a long time and Eddie is completely oblivious until the moment of the kiss.
You can start by writing a short prologue about their relationship up to that point. What kind of adventures have they had together? How have their feelings for each other been evolving? Then, introduce the event that will trigger the kiss. It could be a revelation about one of their pasts that makes the other see them in a new light and leads to the kiss.
Begin by brainstorming the relationship between Duncan and your OC. Are they going to be enemies at first? Or maybe they'll have an instant attraction? Consider Duncan's character traits from the show. He's tough, a bit of a rebel. So your OC could either complement those traits or contrast them. For instance, if your OC is very rule - abiding, it could lead to some comical or intense interactions. After that, outline the plot. It could be a simple love story or a more complex adventure with other characters from Total Drama involved.