Ok..forget the previous technique I went on to the bottom wing and found it easier and works much better putting glue on the wrap first, I took a few pics. First one is my favorite tool for covering..my ingeniously put together "hot knife" lol that I made many years ago with the intention of actually purchasing a real one, but it worked so well I never bothered buying one, the ol girl has seen a lot of airplanes in its time. It works great for trimming excess covering, just quickly slide it along the edge of the part and the excess covering material zips right off with no jagged edges. It also works great to cut foamboard.
Anyway, moving on, I laid out wax paper and cut a piece of wrap a little bigger than a wing panel and glued Super 77 around the outside of the piece and not the center. This kept the center from getting cloudy over the open airframe. I usually like to cover the whole top or bottom of a wing in one piece but did this in four pieces.
Somehow when I cut the foamboard I ended up with a bit of a funky bottom trailing edge on the bottom wing which started looking like a real covering pain, but the wrap shrunk nicely and formed nice and tight to everything, in these pictures you can see the cloudyness I was talking about from the glue. I covered the bottom first then the top just like if it were regular film, overlapped and sealed completely. The fourth picture looking down the wing shows no warping that I can see from shrinking the wrap.
And here is the covered wing which I feel doesn't look terrible at all, the color isn't as even as regular film but for the cost I have no complaints, it shrinks beautifully. The cutouts are done with the TLAR (that looks about right) method, nothing really planned out just trying to lose some weight, I really have no idea which way the cut-outs should go, I know how to build strength in balsa but I really don't feel there is any direction to worry about here, I did do zig-zag on top to match the stab then chord-wise on the bottom with the thought of the pattern working against each other possibly. I am surprised with how much material I did remove it really doesn't feel like it weakened the wing much at all. I did leave the paper on for this build, I didn't want all the strength in the covering until I have more experience with it.
BTW, the light colored areas that show in the last picture isn't to do with the wrap at all. My three year old nephew was helping me and decided when I wasn't looking he should paint the wing..I am glad he used white paint and did it before I covered it