I completed my Boushh costume and submitted for 501st approval in November of 2012. It was a 2 1/2 year process... It was approved for Rebel Legion "Formal" level in April of 2013.
AWESOME Boussh! Which helmet is that? It seems like (almost) every helmet for Boussh is too wide and I don't know why. Your helmet is very narrow and looks great!