Slowing the descent rate at about 50’ will make it a bit easier to judge the last few crucial feet before ground contact. The “retard” call is reminder, not an instruction. A heavy aircraft with a tailwind may need the thrust levers retarded at 30’ where as meeting last second sink could mean leaving the thrust on until touchdown.
Slight forward pressure on the side stick can lighten the touchdown as the main gear rises rather than slamming down, and the tail plane provides an upward force assisting lift which effectively lightens the aircraft. This is a more advanced technique so get proficient in the basics before attempting it or you could end up smashing the nose wheel on first.