The way I use the tape is to run a strip the entire length of the control surface. Bevel the L.E. of the ail. / elev. etc. along the lower edge first...about 45 degrees, then run the tape along the top of the surface. Leave just a wee bit of space (maybe 1/32 ) between the T.E. of wing/stab etc. and the control surface to be attached.
I put the tape on the control surface first, then apply to wing, etc. (if you're building a foamy, lay the wing/etc. flat on the table then stick the pre taped ail. to the wing.

I prefer medium foam safe CA and make sure you get the foam safe accelerator (or the ca will take forever to dry )

Another way to hinge w/ tape is to pin down the wing (for example ) and pin down the ail. w/ the small gap between...then apply the tape.
That works quite well with flat surfaces like a flat wing profile foamy type.