I feel like I learned a lot this semester, mostly due to the challenge to expand our music harmonically, more away from conventional tonality. I also learned a lot about focusing on one idea, and making pieces sound less sectional.
The major challenge of this semester has been writing for Concert Band. This was the first time I had ever written anything for a ensemble so large, and It felt like a pretty intimidating challenge. Overall I feel like I did a good job at it, especially for my first piece for the ensemble. I enjoyed it quite a bit once I got used to it, and wouldn't hesitate to do it again.
I had a great semester, thanks all you guys for your comments and suggestions.