We are already deep into it and many points for reflection have emerged. From my point of view, I would also meditate on two other aspects.
From a didactic point of view:
wagner wrote:Unfortunately, my Teacher only follows me occasionally and demands a lot of autonomy. In the composition of this piece, I am completely free without stylistic constraints or anything else... he advised me to write it to participate in the Composition Competition
The presence of the (M)aster does not reduce autonomy... it is the absence of the (m)aster that, rather than leaving you free, leaves you abandoned. He advises you to participate in a competition and is not there to support you... I am certain that if he had advised you consciously, he would also know how to guide you best. That being said, it is always good and right to engage with other musicians as well, and one way can be, and has been, through the forum.
The second point, however, is related to the use of the term 'contemporary'... I prefer the word 'modern' because an ambiguity often arises with the genre "Contemporary" which, in my opinion, always stems from an initial improper use of the term contemporary. I am certain that the pieces we label as Contemporary today will no longer be so in a few decades... so it is a done deal.
Furthermore, lately, the equation "Contemporary Genre" = "Modern Piece" does not always hold true...
From what I understand, you want to write a modern piece regardless of the dictates of Contemporary as a genre.
Considering that, as I have happened to say in other topics, when courses on "performance practice of contemporary music" are born... by definition it is no longer news (precisely PRACTICE) ... listen to and analyze much music that you like. If you want to start from minimalism... do not hesitate to analyze the major exponents of what was an avant-garde half a century ago. In fact, despite a harmony based on the superposition of thirds, tonality is made of something else, so the term 'neotonality' is quite forced... but we already understood each other.
On the topics indicated by various users, you can find several points regarding competition logic... in the end, I strongly agree with Xenakis's last intervention.