Hey Ken, A technique I teach my students transsitioning to 172 from 152 usually works quite well. The height of the instrument panel is slightly taller as you know in the 172 vs. the 152. Most students try to see over it during the flare and usually end up flaring high because if this and drop like a rock. If you look out the left portion of your windscreen or even out the side window you can judge the height above the runway much easier. When you see or feel that you are about 6 feet above the runway you want to transition to landing attitude (flare). As soon as you feel the plane begin to sink continue with back pressure to maintain landing attitude. Continue until the mains touch down and continue to keep slight back pressure and gently lower the nose wheel down. After a few trips around the patch you will have developed a sense of where YOU need to start the flare using your peripheral vision to pick up on the runway enviornment around you. Everyone see's things differently during the flare so you will have to make adjustment's to make it work for you. Nobody makes perfect landings everytime, nobody. You just need to be consistent with your technique and youll be pleasantly suprised with a nice touchdown more times than not. As far as your instructor go's. POPA is right, you need to talk to him and let him know about your concerns. If he is a good instructor he will be happy to try and make your training more efficient and pleasurable for you. We all have bad days here and there, maybe it was just a bad day for him. If not then you owe it to yourself to have a conversation with him. Good luck!