AidanF
I have recently gone solo in a PA-38 and know how you feel.
I did about 5 lessons in the circuit (3 hours maybe) before being let loose. I too found the approach easy but knowing when to switch from the aim-point to the flare view (whichever method you use) quite difficult. My instructor said that the best way is to wait until the aimpoint disappears under the nose and then look down the end of the runway. Initially I found that hard to do, and tended to look down the side to the ground near me. Eventually I made myself do as he had suggested (look away over the nose to the end of the runway) and it worked. The lesson after that I was on my own! I`ve done about an hour and half solo now and whilst my landings are far from pretty, I can consistently land the Tomy without too much trouble.
keep at it, I soloed about 2 weeks ago and the grin has still not quite worn off! It will suddenly click and you will think "I know how to do it..."
Good luck
Lungs