1.Mark the hinge line on both the top and bottom of the wing.

2.On top of the wing spray a light coat of Elmer's Spray Adhesive. (3M 77 Spray works too)

3.On the top of the wing apply packing tape along the  hinge line. (Clear or colored tape works)

4.Turn the wing over and make a shallow cut along the hinge line. Do not cut all the way thru.
5.Gently bend the hinge away from the cut. I will snap along the cut.

6.Fold the hinge all the way open.
7.Use a sharp hobby knife to cut a 45 deg angle on both sides

8.This will form a strong and flexible tape hinge.