Step 2Sand.
iImage Information

Before you start this step try using your mouse on the plain transparency. Mine felt sticky and did not glide at all, but your transparencies may be different. If you do not like the feel, cut or tear the sandpaper into a small square. Lightly sand one side of the transparency in one direction. It does not matter which direction, I sanded parallel to the sides. After you have completely sanded one side, sand perpendicular to the direction you just sanded. In the interest of contrast, my pictures show me sanding off the newspaper which is a bad idea since it is a wood table. In reality, make sure what you are sanding underneath is meant to be sanded.