I was going to post that tip, but was concerned about getting eaten alive in here. When I was having similar trouble getting the right attitude on very short final and flare, my CFI had me put in a TON of nose-up trim, so much so that I had to actively push forward significantly on the yoke to keep the airplane pointed down towards the runway (w/ full flaps) and the airspeed up. Landing became a non-event.. as we entered the flare and touchdown, it was more a matter of releasing forward pressure gradually rather than having to continuously apply a ton of back pressure. I didn't like it at first because trimmed like that it feels like your trimmed in such a way that if you're not actively fighting the controls you'll stall. It really helped me a lot, though. I use more nose up trim than I used to now, but not as much as he required during that training exercise.
The other thing that helps you get a feel for just how much of ANY control input you need coming down, whether it be rudder or elevator, is to keep them moving slightly.. feel how much authority you have as the plane gets closer to the runway and slows down.... little, almost constant pulses of input. Eventually, you won't need to do that and you'll get a better feel for it, but it does help.