John Farley has an excellent article in the latest Flyer mag. Now I'm not an expert (PPL (just)), but I find that John's recommendations about setting up the approach truly help me. The times that I get it wrong (about 50%) it's because I haven't got the approach speed right and the aircraft isn't trimmed properly. Also, my instructor talks about 65kts approach with 60 over the fence; I think this echos the remarks of those above. Finally (no pun intended), I find that looking at the far end of the runway/horizon is the only solution when sorting-out the 'flare'.
PS. I bet you are so elated when it actually works properly. To me, this is what makes flying a bit like a good round of golf.
PPS. You're welcome to watch me float down the runway prior to a firm landing at Denham any time!!