The only kind of luck your splendiferous vietnamense needs IMHO is, that the judges ain't blind or blockheads and stubborn. And/or that you do not damage the plant during transportation!
One valid point of discusssion, though, as to how high it reaches, might be the form of the dorsal. Some might prefer a wider dorsal with a more rounded upper part, that could be considered giving the overall form of the flower a more harmonious look. Even if that's your concern, its other excellent features ought to secure it a well deserved award❣
