Pretty cool job, but I'm agree with ratchet. You need to work a little harder regards to the graphic. I mean you need smooth graphics, a better illumination and you are good to go.My advice:
1- Focus in the texture of the models.
2-Increase the illumination effects (that will be increase a lot the realism)
3- The environment looks good so far but try to remove the black sharp edges from the sprites.

You can use some screen Shoots from the jungle created for Far Cry 2 as reference. Try that.

Keep working hard you are in the correct path.

Greetings,