AV evaluation of "Music...my language"

The production group Ususal Suspects has recently finished a four minute documentary called "Music ...my language". It features 15-16 year old kids, with a troubled past, in Stone Soup studios performing the arts of multimedia.
Initially we were goig to make the documentary on Nottingham's history of crime. But, being students, nobody was willing to inform us or give us any interviews. So we needed to come up with a more fesable idea. Something where both sides could gain something.
Stone soup project is a government owned multimedia school. It allows kids who have had previous troubles with schools, family and crime, to produce music and films at a relatively professional level.
At the start we had to buil a raport with the kids and get authorisation from their parents and the agency to film them. Once we had their confidence and had a better understanding of the subject. We had a much better idea of where this project was going, what we could get out of it. The idea was to hear thi kids honest opinions.
Once we had shot all our interviews and fills, we started editing the lot. This is when we realised the amount of relevant footage we had to the topic and the more we learnt from them.
In the end, the documentary structured itself naratively and finalised itself to be quite an emotive piece as well as an honest and informative one.
I have learnt much from this experience but would have liked to have more input in the post production.