I love the combination of the instruments with the main flute melody!!! As others said- at times the mix can get a little messy, but overall it is a very friendly and whimsical sounding song, with some equally intense and dramatic sections, especially the awesome climax at the end :)))
Very good job, I loved the reliance on orchestral instruments. My wife described the ending as very triumphant- like Beethoven - so you definitely did something right!!!