Now that we have the light source identified, we can distort it into a ray of light. For this process, we'll use the Radial Blur filter (Filter> Blur> Radial Blur) with these properties set:
Amount: 100
Blur Method: Zoom
Quality: Best
After you have those properties set, click and drag the blur center to the area where you would like the ray of light to zoom out from.

You'll notice that there are visible speckles on the ray of light. Don't worry about it, we can simply apply the filter two more times and most of it will be gone. Press Ctrl+F to redo the previous filter again. After the filter has been processed, press Ctrl+F again to redo the previous filter once more. In total, you'll have pressed Ctrl+F twice.
