Alright, now we want to get rid of all that grayish noise surrounding the white lightning in the middle. We do this by going to the top bar "Colors" and going down to "Levels". A pop-up window similar to this one will show. You see the top part of the window, with the sliders and the blackish looking mountain that's labeled "Input Levels"? That's what we're interested in. There are three sliders below that 'black mountain'. Click on the black slider all the way on the left and drag it to the right until your lightning looks similar to this one. Here you can see that all three of the sliders below the 'black mountain' are towards the right, circled in red. When you have it perfectly the way you want it, click OK.