Hey, I'm not really sure if this will help or not, but I know that it works all the time for my fight scenes, and even some of my other scenes. I don't know if it will apply too much to your current scene or not, but it might help in the future, so I'll post it anyway.
Whenever I do a fight scene, I always start by writing down as many specifics as I can about what I want to happen. Who is involved, how they're fighting, what they're fighting with, and if they use magic or not, etc. With all these little details down, I go to the next step; envision the battle in my head. This requires a lot of peace and quiet, so I usually end up doing this at night, when I'm alone, in the dark, in my room. Kind of a - the darkness becomes a movie screen - deal, if you know what I mean.
Anyway, just mentally play the scene over like you're watching a movie in your head. Watch what your characters do, see what moves they unleash, figure out how each one is going to attack, defend, and counter. Envision every jump, every dodge, every spell they might cast, every . . .thing that they do in the battle. Then write that down on paper too, in as much of a sequential outline as you want. It might take a few tries, and you may end up changing a lot of what you 'see', but I find that once you have that information, and you know where the battle is going, you can get even more detailed. Like Vanguard of Truth said,
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Okay, let's go. Your writing feels cold and emotionless. Hand to hand combat should not be like that. It needs to be desperate, brutal, fast. Feeling is the most important thing here. Show your protagonist's emotions and thoughts - have his viewpoint blurred by pain or adrenaline. Record his hatred or reluctance the whole way through.
Finally, I would be more descriptive. If it's a punch, what kind of punch - where is it heading, how fast is it? Describe the sounds of bones shattering or blood pounding in your protagonist's ears. In a short hand to hand fight you can often describe every movement, because they vary. Don't do this for repetitive cannon fire though.
And by playing it over and over, you can get into the head of each character, and try to envision thier thoughts and feelings. Vanguard is right about being more descriptive, but do be careful not to get too detailed: my first battle scene I used parentheses and 'up', 'down', 'left', and 'right' to describe the direction of sword strikes my peope used. After I tossed that, I still tried to do a blow-by-blow of the whole battle. As you can imagine, that got pretty lame quick, but as I wrote more I found it acceptable to swap out a blow-by-blow account for something like
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Cylerce locked blade and staff with his foes, matching their every attack with a counter twice as powerful. Around and around they danced the elegant dance of swordplay, neither side drawing blood or retreating. Cylerce’s hands weaved a deadly pattern around the others’ blades, combining both Nova and Galathea in a perfectly executed offensive. Each of his opponent’s blades came within an inch of his skin at the most, yet never touched him.
Which suggests a good melee battle, but tries to make the reader envision what is happening between the lines, and gives them a lot more room for creative thought.
Anyway, I hope this helps, and that you can even understand this: I tried explaining my process to my parents and they looked at me like I was nuts. Who knows, maybe I am. . .