For the lower wing, separate the fuselage around the cut you made. Then put the wing through the fuselage and pull half of it through with it in a regular delta configuration. Then fold the two halves up on each side of the fuselage. Then apply a small piece of tape to the underside of the wings while they are folded up flush with the fuselage. Once this is done, fold the winglets down along those half box marks you made on the wingtips. Once you've finished with the wings, apply three staples in the area of the counterweight.