Well, the first step in writing your own weekly blog fiction story is to find inspiration. This could come from your own experiences, dreams, or things you've read or watched. For instance, if you had a really vivid dream about a haunted house, you could use that as a starting point. Then, you need to think about your target audience. Are you writing for young adults, adults, or a specific niche? Based on that, you can determine the tone and style of your story. After that, do some research if your story requires it. For example, if it's set in a historical period, research the time period's customs, language, and events. Finally, start writing, don't worry too much about making it perfect at first, just get your ideas down on paper (or screen).
First, come up with an interesting concept. It could be something as simple as a character with a unique ability or a strange setting like a floating island. Then, create your main character and give them goals and flaws. For example, if your character is a wizard, his goal might be to save his magical school from a dark force, but his flaw could be that he's too impulsive. Next, outline the basic plot points, like the inciting incident, rising action, climax, and resolution.
To start writing your weekly blog fiction story, begin by brainstorming ideas. Think about things that interest you, like a particular genre such as science fiction or fantasy. If you like science fiction, you could think about concepts like space travel or alien invasions. Once you have an idea, start building your world. Describe the setting, the rules of this world, and how it differs from our own. After that, develop your characters. Decide on their personalities, backstories, and relationships. Then you can start writing the actual story, chapter by chapter if you plan to serialize it on your blog.