It is well known that one of the common mistakes a learning pianist makes is to use the left hand “too loudly” when playing.
I know I have in the past but I have managed to control my left hand through brain control.
I also found it more controlled when I drop my wrist slightly when playing bass lines which tends to help me control my enthusiasm!
I am also aware of different techniques such as attack, flat hands play, between keys...etc...
In the quest of improvement, do different techniques/hand positions exists in order to control even more?
I achieve different sound levels by thinking of how much weight of fingers, wrists, arms... to place. So say, Forte would using all my arm weight from the elbow