Wing:

Start with laying down the wing plans and pinning down the leading and trailing edges.  Add the wing tips and ribs except for the center one.  Glue in the center spar leaving overlap with the center rib only placed, not glued in place to set the dihedral.  

Glue the leading edges, where the spars overlap and the center rib.

Add the lower and upper aft sheeting, a score will be needed on the lower one to bend to the dihedral which is set in the wing. Add the leading edge sheeting and center sheeting, the latter is optional.  Add a couple of stringer balsa stock sticks to join the upper and lower sheeting together so they do not cave in under the pressure of the rubber bands.

Fuselage:

Glue the motor mount/firewall section together, placing into the tip of the two 1/4" x 1/4" strips of wood. Join the end of the strips together to complete.  Cut the dowel stock to length and drill holes through the 1/4" strips for rubber band mount wing placement.

Glue the tail assembly in place, taking note of the cut out circle grains to keep them at a 45 degree angle of the stock around it.  Optionally the circle stock can be reduced to a strip in order to save a small amount of weight at a sacrifice upon structure.  Make a U bend in the piano wire to join the stabalizer sections.

Landing gear:

The pattern supplied for bending the piano wire shold be followed upon the center of the diagram, some mincor fine tuning may be required.  Wheels, hubs, and stop blocks should be drilled out tactfully to keep the connecdtions to the piano wire snug, but also free enough to smooly roll.  Take your time and care gluing the inner and outer caps, also plastic spacers can be added as well to reduce friction.

The tail skid is pretty self explanatory, it, along with the supplied thin hardwood stock control horns can be reinforced, saturating in CA and/or a mix of CA with baking soda.


Fine tuning:

The COG should be at 26.6% of the leading edge of the wing, it will fly as far aft as 30% as well. It's helpful to give the wing's some wash, especially at the tips.  

When mounting the motor, down thrust is necessary, 3-4 degrees but right or left thrust may be optional or at least greatly reduced due to the dynamics of the airflow in these smaller dimensions.