Overall, I liked the orchestration a lot. Was this strictly GPO? There is an instrument plucking around :45 and then again at around 2:10 that doesn't sound familiar to me for some reason - maybe it's the way you mixed it. What is this piece going to be used for? I like your choice of instruments and the way you wrote for them.
Yes, this piece is only GPO. I only use Cubase to add reverb and such. All sounds are GPO cause I don't have any other type of sequencer. That plucking sound is Violin Pizzacatto and Viola Pizzacatto playing different melodies.