Another thing is that the ropes for the wings should pull the plane forward and to the sides. It might sound obvious, but I have seen planes that were parked past the tie-down anchors for the wings, and the ropes later pulled the plane backward along with the tail rope.
Having the airplane properly chocked helps greatly in this regard. Pull the plane forward into the chocks with the wing ties, and then just stabilize the tail with the tail tie-down. By pulling forward against the chocks, it keeps the angle of attack on the wings low - which helps reduce the wind's effect on the aircraft.
