Get rid of the texture on the grass, it'll look fine as a solid colour.
This is a decent first attempt, although the tiling is too obvious - the bigger 2x2 dark spots make a clear pattern (especially when zoomed in). The simplest fix would be to have a couple of variation tiles.
Also, the dirt and grass have the same texture, which is a bit odd. The texture is fairly abstract though, so you kind of get away with it.
Oh, and your colour choice is quite nice. (Darkest green could be dropped though, it's a bit too high contrast with the rest of the grass)
Thanks for the input guys, i'll take them into consideration for the next time ;)