Each dance and competition category has different things to be "demonstrated". They are expected by the judges and/or audience.
I'll take an example for WCS novice, who dance strictly or J&J.
You should demonstrate that;
(i) Your steps are on time with the downbeat of the music
(ii) You know and do the basic steps according to the rules (like 6 count basics, 1-2, triple, triple. Follower starts from right, etc)
(iii) You position correctly in executing the basics (WCS is a slotted "swing" dance)
(iv) You have good connection, momentum control, and lead-follow teamwork
(v) Both of you are having fun (smile!)
(vi) You are listening to the music by matching your move with the music (musicality)
This much is the minimum to be considered to be remotely competitive.
Then, if you want some edge, you demonstrate that;
(vii) You move smoothly and well, even show some polished and sophisticated look
(viii) You do moves that look interesting with good musicality
(ix) You look relaxed and know what you are doing
If you want to demonstrate all these in competition, you'd be busy preparing for these.
Sometimes I watch boxing or UFC. Good fighters in these days are not just brutes. All champions have good techniques. That is how these sports have evolved. Showing adrenalin-flooded excitement is one thing, but good guys all have great techniques and cool head on top of it. There is a difference between hit and strike.
In competition or audition, they usually say, "show what you've got". And what they primarily appreciate is great skills, not only the dancer being emotional, excited or having fun. We know the former is much harder to acquire.
Is this too judgmental? Sorry, but a contest is inherently judgmental. Competition is something that is going to be judged. Losing self-consciousness and "dance like no one is watching" is a skill that you can acquire, too.
If you are starting out competition, learn to focus on your demonstration. Then you make progress so much faster than just picking up stuff on social dance floor on trial-and-error basis.
I feel like there are so many stuff on my plate. Funny thing is that I took up at least a half of them voluntarily.
