3 Add a new layer (Layers>New Raster Layer). The new layer should sit on top of Top Layer (this will be a dummy layer). Draw a white line in the area where you wanted to expose the wires.
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Draw Settings:
Type = Single Line
Style = Stroked
Width = 30
Antialias = checked |
Choose Round Cap End Under the Draw Options Tab  |
Pick the Selection Tool , press [CTRL+A] and cliick your mouse anywhere on your image. The white line should become the active selection. Save this selection to alpha channel (Selections>Save to Alpha Channel) and name it "Exposed area". Deselect active selection by pressing [CTRL+D]. Delete Layer3 (Layers>Delete).
Load "Exposed area" selection (Selections>Load from Alpha Channel). Apply a Linear gradient fill using the same settings in Step 2 on this time, set Angle = 0.

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