Need help cropping an image for a header in Gimp

[Blighty]

The Clone Tool can be used, but I used a different method just because it was quicker.

1) Use the Colour Picker to set foreground and background colours. They are slightly different.

2) Use the Free Select tool to make a selection on the top left corner.

3) Use the Gradient Tool to create a gradient in the selected area.

4) Select > None

5) Use the Smudge Tool to hide the line of the newly created gradient and original image.