i like the last one the best. it reminds me of master chief in halo 2. i thin the could be better but really nice how they are
I actually like the first one the most. It's rather vibrant compared to the other two. He has a good pose in the third one, but the haze ruins it a little for me. I took this shot and these shots from a different outlook than you took yours, they can give you any inspiration for future ones or something like that. Yours are very dark, some with light in the background, while mine (except Neon) hold their darkness within the Spartan's contrasts and don't use anything to obstruct one's view of him (the latter two). Hope that helps!