Can you give an example?

What do you think is wrong with your writing? Or what do you think you are missing?

Most folks who are on the "fan art" level of writing tend to write stories for themselves first and then maybe for other people. When you point this out they seem to be amazed that writing might be approached as a means to entertain an audience other than one's self or that if the writer is entertained surely everyone else will be too.

As an example... I recently was talking with someone who was working on a fan art story based on a popular game and they wondered what it would feel like to merge the minds of two beings together... after some discussion it became  clear to me that the person who had asked the question was not really interested in an answer... at that point I realized that they were not really writing a story but 'playing' with an idea publicly and was more interested in 'playing' in the game universe that writing.

The first point to be learned is that to write means you are writing for other people-- your readers -- especially if you want to be paid for the work.  Writing is "entertainment" and if you don't entertain then what is the point? 

Once you realize that you are writing to please other people then you get to face the real task... telling your story in a way that makes other people like the story as much as you did when you thought of it.

Then comes all of the craft stuff: plot, characters, setting, mood, style, the archetypes, the motifs, the tricks and tropes... the voice... the twist and so on...

The point of course is to tell a story only the way you can tell it... but in a way that entertains your readers / viewers. Anything else is a waste of your time and theirs.

I don't claim to be an expert but I have been writing one thing or another since the early '70s. Had some things published... I don't take it serious enough to make it a career but I do have a bit of a resource library.