Finish sanding the sheeting even with W22, W18 and W1
Drill two 1/4" holes at the marked location on the leading
edge of the wing. Cut a 6" 1/4" hardwood dowel in half and
test fit in the holes. Remove the dowels for now.
Shape the leading edge of the wing to a round shape.
Fit the aileron into place and align and mark the location of
each wingtip.
Glue the wingtip into place and sand to the shape of the
wing. Round the outer edges of the wingtip.