Hi aidanf
Just like others said, it really does come right with practice. For the PA28 I fly, I rather liked my instructor's suggestion when I was doing my night training that you should round out when the runway lights seem to be at shoulder height.
Don't know if that applies to the daytime though: others will be better qualified than me to know whether it works in the daytime.
The other thing that helped me, being a text book sort of person, was Alan Bramson's "Make better Landings." I fear it's out of print, but
abebooks (search for Bramson, Alan and the title) currently has a number of them.
Have fun Thursday.