This is a fantastic art piece probably because it has this great description with it. It makes you realize what robots would think if they had roles in situations like this. It's unbelievable you made this entirely in Photoshop. Then again, that is what most people make pictures like this, right? The robot kind of reminds me of Evangelion. That might only be because it just comes off as a very poignant picture to me.
The shadings and colors are absolutely flawless. I love how there's this guy in the sky (rhymes) who seems to be on a hang glider or something. Or maybe that's supposed to be some fantasy creature, I can't tell? I also love how the mountains seem to just be scooting out for the robot. It's easily the largest thing in history here, even larger than the blue whale. The robot even seems to have battle scars.