For the landings (in any airplane as far as I know) look at the opposite end of the runway that you are landing on, once you have begun the flare. From your perspective in the pilot's seat, try to slowly and smoothly work the nose cowling up to the horizon so that they are "touching." Try to memorize this picture. Learn to fly by looking outside and doing as many things visually as possible. To practice this away from the runway go practice power off stalls with your CFI and don't forget to memorize that picture and back-pressure feeling.

P.S. Some of those PA28's seem like pretty nose-heavy aircraft and make a good solid thud sometimes regardless of how soft you set them down. Good plane though I've got roughly 90 hrs in them.