Before using Liquid Sandpaper, wrap a piece of Cotton Cloth over a Felt Pad.
Make sure the Cotton Cloth is tight and smooth.
Next, poor a small amount of Liquid Sandpaper, about the size of a quarter, onto the Cotton Cloth.
Now, lightly rub across the surface removing the excess wax and other contaminates that might be present.
This will also dull any bright spots in your repair.