I've done some REALLY awesome backgrounds before on FFX2, but i formatted, and the post was since then either edeleted, or is like 4000 posts old lol. Anyway, I was bored so meh.
looks like you have an image from the trailer. put text on it and saved it. 98% isnt your work. try to get a better ratio for that.
actually, master chief is around 5 layers. I blurred him, filtered a bit, smudged. I know it sucks, but i'd say about 60% not my work lol.
Its still 99% their work, smudging/blurring for 5 layers doesnt really overtake the hours of model editing on Master Chief.