Mark gave some good advice both about the tissue and CA.

I would like to suggest the you make up a frame with some scrap balsa and try on that first and after you get the hang of it, then do it on the model.
I have not done the tissue thing for many years, but I seem to remember spraying the tissue with water so it is damp, not dripping wet and that makes it more flexible and easier to work with. Brush dope around the edges and the tissue will get a bit tighter as the water dries. The dope still sticks it down event with the tissue geing damp.

Phil in MN[8D]