Op. 25 no. 12 - technical help

[madsfr1234]

Hello!
i'm going to play the op. 25 no 12 by chopin at my audition for the Music Academy in Denmark.
The music Academy is a 3 year course that gets you prepared for the Conservatorie.
As i mentioned before am i going to play this chopin etude.
but i need som help, to get it sound better.
iv'e got around three months to perfect it. I have the notes down, but i want it to sound better.
i'm also going to play the nocturne by chopin op. 9 no 1 ( :

Fuglsang