Ron, you start sheeting at the leading edge. You sheet towards the spar. Usually right to the rear edge of the spars. Then between the trailing edge sheeting is more sheeting in the center of the wing. Then from say the second or third rib out from the center you use cap strips. Which are thin strips of balsa that go on top of the exposed ribs. You are in essence turning the rib into a small beam. Check the books and plans thoughougly. They should show you how much of either and where they go. Good luck with the kit.

Mark Shuman