What happens next?

How to remove the background using a layer mask in gimp
Open up your image in gimp.
This picture of a toddler will be used here.
Click on the brush icon and set it to a' softish' setting.

Options are:
1). Display your image near the top of the layers list. Put your layer mask over your gimp image and press' save' next to it.
2). Add glaze onto all lines in the image. This will be used to add screen area to the background.
3). You don't want it to be too hard or too soft. This will keep your edge from being too hard so that your subject will blend in easier in whatever scene you might put them in.
4). Open a new layer and set it to a top layer (painting on the background, blending, filling and then turning the background into streaks). Use a pair of tweezers to carefully pluck the layers off the background.
3).