I by no means have it perfected but I really had aileron correction after touchdown hammered in to my skull one day. My instructor and I were out at the practice area on a windy day and by the time we returned home the winds had shifted to the point that we had to use our home airport's intersecting runway. It isn't the smallest runway in the world but it is pretty dang narrow. I had a pretty good crosswind correction in on final and everything was going smoothly until I got to the flare. The hangars around the runway caused a bit of an eddie over the runway that really surprised me (Lesson number one) and once I flared and touched down I completely lapsed on the aileron correction. The plane weather vaned on one wheel enough to really scare the crap out of me and cause me to abruptly throw the aileron correction in, settling the aircraft down. That's all it took for me to remind myself every time I land to correct for the crosswind with ailerons upon touchdown.

Props to my instructor for sitting back and letting me scare the crap out of myself without freaking our or taking the controls! It really drove the lesson home