Ok, a couple things that I see in general that will get kicked back in Brigade App.
First, you need a backplate. It's required for all professions. I know they're not your favorite, but maybe you could look into a segmented backplate for more comfort?
Secondly, I don't see a cod plate either. What you have right now would qualify as an armored loin cloth. If you want you can keep it and wear it over a cod, but you'll need a cod plate attached to the flightsuit for brigades.
Your flightsuit looks a little baggy under your knees and behind your shin plates.
Other then that, you're really close! Well done!!