what jury want?

In performing at (or preparing for, for that matter) a competition stage, we all need to keep in mind what the jury want.
It is easier to identify what they hate in the first place.
They do not want to hear you play too tense.
They do not want to hear someone who obviously attempts to show off his ow her mechanic (not technique).
They do not want to hear something way out of what the composer specified, and that violates basic rules of music, unless you are absolutely confident that you intentionally constructed that piece and that sounds convincing.
They do not like colorless music.

On the contrary, they love to hear your love of the music, your love of the piece, your love of performing in public, your love of the instrument, and the sign that you cherish the moment.