This white line looks similar to a pencil line; here you can also adjust the edges to find the width of line that you desire. The next step is to work on the smoothness of the edge and the brightness factor. I personally like to use an edge width of 1 and edge brightness of 4 and about an edge smoothness of 6. Then click ok when finished.
Now at this moment the lines are white and the background is still black (reverse image) but we want it to be the opposite.