Every story rests on 4 basics: a framework (a character who has to overcome obstacles to reach a goal), a clear start, middle, and end, consistent details about the character and their world, and something that makes readers relate to it.
If you think that storytelling doesn't come naturally to you, don't be discouraged. There are rules and guidelines that help exactly people like you. Here are the 4 storytelling basics that will get you on the right track.
Lay out the framework
The basic shape of a story is mostly the same. You have a character who must overcome an obstacle to reach a goal. You could take it a step further and have more than one main character struggling through different obstacles toward different goals, but save that for later.
Set up the start, middle, and end
The start sets up everything about the story. Introduce your readers to the world of the main character. Show bits of the character's background and their problem. Don't explain too much in this part: save that for the middle, where you show the main character struggling to overcome the challenge. Finish the story with an ending in which the problem is resolved and all questions are answered.
Add some details
Details can make or break a story. Who is your character? The Chosen One, or a nobody you would never remember if you passed them on the street? Describe their quirks and flaws, and how these affect their efforts to deal with their problems.
The details should extend to the world of the story. Whether the story is set in the real world or in an imaginary one, make sure your readers can see it as they read. (The basics of world building help with the second kind.)
Remember to keep your details consistent. Take The Hobbit, which began as a story J.R.R. Tolkien told his children. His son Christopher listened very carefully, and whenever he noticed that a detail had changed since the last telling, he pointed it out at once. As the story goes, his father went straight to his desk to make a note, and from then on he wrote down the details of his characters and of his imaginary world.
Granted, your first story does not need an elaborate plot with hidden subplots and twists. Start simple and make sure you have all the ingredients in place. Once you do, it is time to add one last spice.
Make your story relatable
If you want people to care about the story you are telling, make it relevant to them. Don't be like the man who is more than willing to tell anyone who says hello about his worst day. Even when people give him an "I couldn't care less" look, he just keeps on talking.
Why did so many adults look forward to the film Incredibles 2? Because they loved the first one. It was a story about superheroes, but it also connected with adults. People could even see a bit of themselves in the villain, Syndrome: he was not happy in his own skin or with his own life, and he wanted to be somebody else. That was relatable. It was relevant.
Those are the 4 storytelling basics. One more thing: if you want to publish your story on your blog or enter it in a contest, do yourself a big favor and check it thoroughly for spelling and grammar mistakes, for example with the Spell Checker. A clean text shows that you care about the details.
Finally, to become good at storytelling you need practice, lots of it. Make it a habit to write a story once a week. It does not matter if it is short: just keep at it and enjoy the journey. When you are ready for more, read how to write a good short story.