I'm making art for a platformer game, and this is my first attempt at pixel art.
The trees in the background were scribbled out pretty quickly and haven't been cleaned up yet, so I'm mainly looking for help and criticism regarding the grass and dirt tiles right now. I'm aiming for a green/blueish color scheme, like you're deep in the forest, although not so much that there's very little light, so I would like some help regarding the colors of the dirt in particular.
I also intend to be able to climb walls in my game like in Megaman X and Zero, so I'm thinking the walls should be "straighter", but I'm not sure how to go about that.
Any help would be appreciated.