Then, move your mouse focus back to the image window and paste (Ctrl-V). In the Layers dialog, click the Anchor button to anchor the pasted image into the layer mask. After this step, your Layers ...

The technique makes use of layers and layer masks in The GIMP, so it is important to have a basic understanding of what these are beforehand. The next section introduces these concepts and provides a ...

Now highlight the Masked Layer that you just inverted, right-click, and select Add Layer Mask. In the dialog box that pops up, check the Selection radio button, then press Add.