Here is the coating I use for all my Tissue and Stick Model Aircraft. The can as pictured here has so many names on it that I don’t know exactly what to call it—so I settle on “Krylon Clear Spray — Flat Finish”. It also comes in Satin finish so it’s your choice whether to use Satin versus Flat. I like the Flat because I have found that the Satin shows up glue spills on the tissue whereas the Flat shows them far less. I also just like the appearance of the Flat as it is far more forgiving. This paint finish can be found most anywhere including HD, Lowes, and Ace Hardware, but my choice is Walmart because of its lower cost.