Well just rightclick the image u wanna use and click "save as" or "save" then open up ur FH folder and then go into your terrains folder then click textures and then now find your image that you saved and drag it into the textures folder. Btw its important you do it like... FeralHeart>Terrains>Textures and not FeralHeart>Textures if you didnt already know that X3