I would agree with eishiya, altough what bugs me a little is the color more than the texture change ; the whole grassy area is a blueish shade of green, whereas the transition between dirt and grass is a warmer, more yellowish shade of green. I would try to "warm up" the rest of the grass as well, maybe it's just me though. The textures in themselves look fine to me!
Also, I don't know if the picture with the characters on it is just a quick mockup or not, but the resolutions of the grass and of each character seems to be different (bigger pixels for the guy on the left, smaller pixels for the guy on the right). If it wasn't an intentionnally sketchy scene you might wanna avoid mixing up different resolutions.