On my Carvair build some of the plane has a foamboard paper finish and the rest is depron on the outer skin, what are the best options for achieving a gloss finish and adding some extra hardness to the depron to stop marks and dings? Is there anything i can paint onto the depron to make it tougher wearing and seal it so gloss paint will look good on it or do i have to cover in tissue and pva etc? Does iron on film go over depron ok if you are careful with the heat iron? Looking for advice from those that have done it, pictures of the finish achieved would be good as well.