Not much effort made here, it only took me 3 hours to forge that, but I think it's good enough to please me, so I don't much care for anyone else's opinions!
Haha, I love them. The second one could use some work though. The pen and ink filter didn't work to well with the explosions. I would put the spartan in the air, where the color change is happening, and move the entire screenshot into the air. Then you should get a very nice effect on your focal.