It's rare and interesting to see a thread where everybody agrees about the right answer. I'm just going to be another boringly concordant voice, to whit....
- Fly at the approach speed in the manual, adjusted correctly for weight - no faster, and usually no slower. As BPF says, in a PA28 with 2 POB and half tanks, that's a smidge under 60, not the 75kn I've seen in a few schools.
- Don't look down - look at the far end of the runway and position accordingly.
- Don't try and land. Keep trying to stay just above the surface until the aeroplane gives you no choice in the matter and lands anyhow.
- Nobody expects a 20 hour student to be delivering consistently "good" landings. You're not deficient, just still learning.
G