The problem is, its not realistc. Its not nonrealistic either, like in a art style kind of way. Your colors just dont make sense, too much black in the grass, which doesnt look much like grass to begin with. It shouldnt be called a high res pack, because it isnt. Its a filtered pack. Now, dont get me wrong, it's good to see new packs, and its good to see youre open to criticism. Look at some newer games, and see how the texture work is done there. Stay away from black aswell, its the most unnatural color out there. Go outside and look for something that is naturally black. You wont!