You will use this technique of blending layers together over and over again in the future. Let's move on and see whether we can get this texture to repeat seamlessly. This is called tiling . Tiling is useful when we have a large area to cover with the texture.
Go to Layer ¦ Layer to Image Size.
Save your project as a GIMP XCF file before doing the next command. Now, go to Image ¦ Flatten image. This removes all the layer information:
Note
Before transforming a layer as per the next step, you will need an image that is an even number of pixels, wide and high. If your image is not, use Image ¦ Canvas Size to take off a row of pixels where needed. Remember to uncheck the chain icon so that the height and width don't change together.
Go to Layer ¦ Transform ¦ Offset. Click on the button that says Offset by X/2, Y/2. Now click on Offset.
Everything should look absolutely fine, apart from a black strip down the middle. It's there because the second texture...