On the increasingly rare occasions I do get feedback from my prelims, it's always a technical shortcoming that holds me back. Positive feedback is either a "good" or a checkmark but little else.
I never hear about committees describing the winner's audition performances. What makes them stand out? Technical polish? Stylistic literacy and knowledge? Creativity? Flexibility on immediate feedback?
It would be good for me to spend some time pursuing what sets the winners apart as opposed to my typical mode of avoiding mistakes.
If I were you, I would consider avoiding the mentality "technical perfection above all". Reliable, strong technique does not live in a vacuum. Technique and musicality go hand in hand. A good musician is a good musician.
Every round is an opportunity to showcase yourself and bring your music to life. Committees genuinely want to hear everyone's best. We want to hire. We know that mistakes happen to everyone even at the highest level. But what is not permissible? Serial mistakes. These are mistakes (or rather unwanted habits) that present throughout an individual's audition. Some examples of serial mistakes: intonation in the cracks (i.e. not resonant), rushing short silences during rests, omitting dynamics/articulations, etc.
Mock auditions are key. Play for as many people as possible and share your observations with one another. Audition preparation is all about developing a highly critical, yet judgement-free ear and to always strive for greater consistency. Good luck.