Originally Posted by
badflaps
I'm guessing that the needle-ball[turn and bank to you] is not in your scan. The ball needs to be centered at all times for coordinated flight. If the ball is not centered- step on it. I don't think you have tied everything together yet and are flying mechanically. Watch the ball. Keep the nose straight on landing(rudder), stay lined up (aileron). Watch the ball. Some will disagree but it's a start. Good Luck

I disagree, when landing, use the rudder to keep the longitudinal axis aligned (nose straight) and ailerons to control drift, however much is necessary. Do NOT let the airplane drift off the center, be aggressive if necessary with these. Coordination is out the window at this point and with any crosswind or gusts, it's not coordinated.
Although "scanning" "the ball" is important and should be done, one should learn how to fly coordinated without it'd use and understand the relative wind concept, rather than always being behind the ball, which basically tells you you've already screwed up.