I love Shadow of the Colossus too!!! Played the game countless time already, and I love how you put the mood into this image, very awesome illustration in there, lovely depth of field on the landscape. great job!!
I did a fanart for SOTC too, do have a look at it, although i still have problems painting the depth. [link]
Have you played Ico--that game has many of the same overarching earthtones/natural grit/puzzle solving themes. I didn't really like the gameplay too much in Ico; for me, the stars of the show are the Colossi alone!