Mistake #5 - Dialogue Tags: I get it. Using “he said” and “she said” is boring. However, dialogue tags are meant to be functional and not descriptive.
Gee, how about trying tags that are functional and descriptive? If your going to put a word on the page, making it serve more than one purpose seems like common sense.
Or how about the way those tags distract the user? When one of my admirals snapped at one of her subordinates, I didn't hear any feedback from distracted reviewers.
Sure, they can be overused, but having to read a fancy dialogue tag doesn't distract me in the least. Why should I write a sentence showing how my admiral is pissed off when I'm in the middle of a fast-moving battle and short choppy sentences are best suited for the scene?
Technically, I could have written "As you were, Ensign!" the admiral said, and let the exclamation mark serve in lieu of a snapping dialogue tag, but I find that I scan over punctuation marks since they're so small. I use said for regular conversation and other tags to give them added weight.