So you wanna be a ref. Mixoris will need to teach you and test you.
When battlers are battling you say something like this for example: *cero shoots at Len and Len gets hit * You don't say "Len gets hit by cero". Use the stars.
You may add your own input in the battle but make sure it is like your character's personality and it isn't criticsm.
Hmph Yuma just got hit. Len is strong I see.
That is all. This is just basic for now.