Totally agree with scotbill and actually that technique also works admirably on any light aircraft I've ever flown.
The most common mistake I've seen comes from those forgetting to centralise the rudder once on the ground.
It works like this:
During the approach phase apply sufficient downwind rudder to point the nose down the centre then apply sufficient opposite aileron to hold a straight approach path along the extended centre line. Once on the ground just centralise the rudders but continue to hold into wind aileron throughout the landing roll. This technique looks and feels very professional and once perfected it will enable you to stay right on the centre line throughout your crosswind approach, landing and rollout.