Thanks all for your replies. Unfortunately I don't know anything about making the music sound as good as possible on the computer. I know about dynamics in Finale etc but I don't know how to work with sequencers and such, so I have to rely on Finale's sounds. I have GPO on my computer but to be honest, I don't really know how to use it and my computer becomes terribly slow when I try to load all the instruments in the Kontakt Player. Is my computer just too old or am I doing something wrong?
I hope ofcourse that the orchestra my father plays in will perform this during one of their rehearsels, but I have to rework some sections before it's ready for performance. Did you think the piece formed a whole or did it feel like all little sections? I'm a bit worried about this because I think I developed some themes, but those themes didn't come back later, so the listener is constantly dealing with new material, without recognizing earlier themes. Did you feel like that or do you think it formes a whole as it is?
Once again, thanks for taking the time to reply! :)