That looks absolutely incredible! Especially for a free handed build, you did a superb job. It really has a unique feel to it, while still being recognizably Halo. I love the paint and detailing work as well.
Dude, that looks outstanding! You did an amazing job for not using a file, props to you.
I am curious though - how did you add the detail to your armor to make it look a little scratched up?