POM help on how it looks

I dont really understand on how POM works just know i need a Height Map and a normal to get it popping out from the mesh but im having a problem i dont know how to keep the image the same in all axis cause when i get closer to it. The texture gets bigger and when i move to the other side of the plane it moves on the other. What i want is the material to stay the same size no matter how close or far i get to it. http://postimg.org/image/rvncvp7h3/ .Also idk y i keep getting error on trying to put Screen shots