Shahid,
I have top hinged a plane before and am doing the same with my next plane. For the actual hinge, what I did was:
Cover all the ends of the ailerons, and the small area on the wing before the aileron starts (ie all the places that will be impossible to Iron down later when the surfaces are attached)
Cut out and inch long strip of pro film.
With the surface deflected fully down, I taped with masking tape the aileron to the wing on the top surface. I then deflected it the other way, and ironed on the film. I then covered the top of the wing and aileron (with no cuts down the hinge line, so the aileron and wing are covered together) followed by the bottom. Make sure you always deflect the surface either way to ensure you have clean travel to the end of the bevel with no binding. With this method you have three layers of covering acting as a hinge, and to tell you the truth I was quite pleased with the results, it looks quite good. I still have to fly the damn thing (tomorrow hopefully).

i used this for both ailerons and elevator, but for rudder I went the old fasioned way. Oh and also be carefull to make sure that the aileron and wing tips match up evenly, as does the gap at the root. i nearly missed that one.

Good luck!
Robert.