Need help using layers
I'm new to gimp and trying to figure out how to use it in order to create textures for a car in a game. The game has already provided a basic template (See attached image), but it's just one flat picture with no layers, and I need to be able to edit the areas of the car separately so I can add something to the hood or the door without the image, drawing or text spilling over on to other areas of the car. Essentially what I want, is to have one layer for each piece of the car, so I can add an image to the front door that doesn't spill over on to the back door or front fender. I already tried to select the area I wanted for one piece and then add it to layers, but that doesn't work as it just pastes another picture of that same area on top of the original template. Someone please give me a hand. Any help would be greatly appreciated.