Try also flaring on attitude.
Set up upper air circuits, same ias/rod/trim as per final stabilise note the attitude. Raise attitude in finger widths until you stabilise at ~200fpm. Note that attitude... 'Bounce' between the 2 attitudes, learn the stick movement needed to go from descent to flare.
Back in the pattern... Look for the picture/angle the runway edges makes with your shoulders, refine that flare height (at which you start the stick movement) and the rate with what you see out the front, as previously described.
As many things need to be constant as possible for you to develop self awareness of dynamics like the flare.
Hats off for you asking, too BTW!