Many people have asked me how do I write my stories. Specifically this is more on how I write action scenes, in my stories. I think of an action scenes like a song in a Musical. Its very easy to write when you have that mindset. Mainly because in a musical a song is used to either 

-A: progress the story.   Or

-B: Tell us more about the characters/lore

And if the song does none of this, then the song is useless. Same thing with an action scene. If the only reason you have for characters fighting is that "This Action story needs action" then you should probably rewrite that section. Which leads into the next part of how to write an action scene. Some of the stories I see have very well written scene but then some fight scenes amount to "They Fight" and then follows with the aftermath. This is a common thing people do because describing the result of a fight/action scene is way easier than describing the scene itself. Usually 2 things can go wrong when writing an action scene. 

-A: there's too little detail so the reader doesn't understand what happened.

-B: there's detail but in the wrong areas making it seem disjointed.

The way I fix this is that I usually have a start and end point to a scene first.

Ex: Jennifer and Elena Fight-Elena wins

Then from there you ask yourselves questions to the scene as if you're the reader. "How did this fight start"

Ex. Jennifer ran forth and struck Elena in the face. 

"Whats Elena's reaction?"

Ex: Jennifer ran forth and struck Elena in the face. Making the girl reel in pain.

"What does Elena do next?"

Ex: Jennifer ran forth and struck Elena in the face. Making the girl reel in pain. Elena smirks and returns the favor by tackling Jennifer to the ground.-Elena Wins

Assume that I continue this method until I get to the final point below. Remember to keep the ending of your scene in mind too.

Ex: Jennifer ran forth and struck Elena in the face. Making the girl reel in pain. Elena smirks and returns the favor by tackling Jennifer to the ground. The girls went back and forth for what seemed like an eternity. Jennifer slowly getting worn down by Elena's relentless assault of attacks. In one final blow, Elena kicks Jennifer across the chest knocking her to the floor. Jennifer let out one more sigh as she passed out from the pain.

Now that the scene is done more detail can be added. Now for detail put yousekf in the characters position to get believable results, such as......

Ex: Jennifer ran forth and striking Elena across the left side of her face. Making the girl reel in pain as she grips her face with her hand. Elena coyly looks at Jennifer and smirks, returning the favor by sprinting forth, tackling Jennifer to the ground. The girls went back and forth for what seemed like an eternity. Jennifer was slowly getting worn down by Elena's relentless assault of attacks. In one final blow, Elena pulls herself back and kicks Jennifer across the chest knocking her to the floor as a loud thud echoes around them. Jennifer tries to pull herself up but let's out one more sigh as she passed out from the pain.

That is the process on how I write an action scene. I hope this was useful to any writer looking for help. (^_~)