I am not going to throw all kinds of numbers at you, BUT be sure to shift the point of your visual focus:
For the approach, you focus on the aim point, your intended touchdown point on the runway. Of course, you will also often check your instruments inside.
For the flare you need to look far down the runway, so that your peripheral vision can see the rising of the ground, that is the best indication for proper execution of the flare. Shift that visual focus point as you cross the runway threshold, so, approximately at 50 feet (for small aircraft perhaps a little later or lower). Once you have shifted your visual focus point, do not anymore look inside to your instruments. The continuity of the perception of the ground movement is what you need for proper execution of the flare.
During the flare, adjust pitch and power as appropriate for your aircraft type to achieve almost level flight as the main wheels touch the ground.