Apply Masking Paper to Trim Edge

today i got a handy tip for you and it's how to keep your over spray from running down your walls when you're spraying your trim if you've already painted your walls what we're going to be doing we'll be masking around this entire window and i'd be masking with just nine inch paper in my production tape so i have this paper here now in order to keep the over spray from running down the wall i'm just gonna take crease fold my paper over and crease it