Attached. Trying to make a simple skin, then got terribly confused.
Please help me as I will be fully gratefull.

The whole section to the right is the rear wing. There are several different wing elements to the rear wing, which is why there is so many panels. The top left piece is the top element, the one to the right of it is the lower element of the top section of the wing. I believe the one to the right of that is the top of the element at the bottom of the structure, and the three along the bottom are the bottom sides of the wing elements.

My tip: If in doubt put a different colour dot on each bit and then look in cmx viewer