For those who are interested in going REALLY scale and are looking for a "good covering", the answer is that there is no covering that replcates the surface of a Skylane or pretty much any other Cessna light aircraft because they are not "covered" in real life. The exterior of the aircraft is made up of overlapping sheet aluminum panels that are riveted together leaving ridges and seams along with dimples or depressions in every rivet location.
Although the aluminum sheets are perfectly smooth (meaning having no texture), the overall skin has tons of dimensional detail comprised of ridges, depressions, waves and protrusions of rivet heads. To my knowledge, no one has yet accurately emulated the skin surface that a Cessna and many other aircraft have, although I think it's possible to do if someone cares to. In most cases what RC fliers refer to as "scale" ends up being a somewhat rough representation of a glossy surface that's comprised of lumber encased in colored shrink-wrap, but hey.... who's going to notice when the thing is flying by at a hundred miles an hour?