50ft is far to high for an A320. Try raising the nose attitude 2 degrees at 30ft (a small check) and look at the far end of the runway to judge the final flare rate onto the runway. Do not delay retarding the thrust levers to idle, the "retard" call is a reminder not an instruction. Select reverse thrust when the main gear touches down which will counteract the tendency of the aircraft to pitch up with spoilers deployment although the elevators will try to do that and control the nose gear onto the ground. Good luck.