A few of these have been mentioned, but common things to look at are:
-uptime, make sure you are always hitting something/gcd rolling.
-unless you cap resources, try and time your big hitters (midare, higanbana, shinten dump) during party buffs like TA. Dots snapshot on application, so a higanbana during TA will get the 10% bonus for the full minute.
-always try and use guren when adds are present.
-More hagakure, sen are more valuable as Kenki than as a midare.

I’m sure there are more but these are what came to mind.