Getting rid of foggy, haziness in headlights

[caunyd]

Hi guys, I plan to get rid of the fog and haze in my head lights. My question is, when sanding, how hard should I be pressing down on the sand paper? In the past, I've been pressing down very hard, but I'm not sure this is the right way to sand. Thanks!

 

[longdx]

Basically you should just let the sandpaper do the work (minimal pressure) . I will alternate the direction of sanding when I step up to different grade of sandpaper.