First as a writer you need to decide on what they know with martial arts. It needs to make sense for the character, some random person from a small town in the middle of nowhere Ireland isn't likely to know Kung Fu, but they may know wrestling and boxing.
So make something that makes sense with your characters, then watch a lot of fights of the style that you are wanting to write and do some running commentary on it. Describe what you see, whether to yourself or a patient friend. It will help you get a better understanding of what you want to describe and you'll have experience speaking about it, so the only thing left is putting it on the page.
Here's an excerpt of a practice match from a book that I'm currently working on. Hope it can give you ideas. Also, feel free to critique it.
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The sparring started easy, but as they warmed up, the pace quickened and the fighting began in earnest. They exchanged blows and bruises with each other, testing their guards and strengths. Seeing an opening, the guard stepped in with high sideways blow aimed at the temple. Aris quickly moved into an inside guard, raising his right arm and blocking the oncoming stick with his own and trapping the guards arm with his left hand, keeping hold of the arm with his left hand Aris cross-stepped under the arm while delivering a blow to the guards ribcage, he immediately followed up by slipping his blackvine to his opponent’s shoulder and sliding it under the guards neck and leveraging it, putting his opponent in an armbar and neck crank simultaneously, causing an immediate tapping of surrender by the guard.
Well something that always kinda makes me sad is seeing someone you love get really hurt or die, so have the dude she is beating up have a family screaming for it to stop and when she is finished have like the daughter come rushing to his side as he is passing or something, that would churn some emotions.
First, get them in a shouting match.
Then get them into a shoving match.
One throws the other out the window and goes after.
When it fills out into the streets, start throwing punches.
Make some family members or strangers try to stop the fight.
Then make them bleed, both of them.
I am writing a story and two characters get into a fight outside a restaurant. I want the fight to be as descriptive as possible and told from one of the fighters view. Um... what else oh and if it helps any the fight is between a boy and a girl(girl's point of view) This is a pretty bad fight too. The girl is really strong, stronger than the male expects but the male is also pretty fit.
