It took me yonks to go solo and I felt like a real dunce, and that all the instructors and other students were laughing at me. They probably were! In the end I went up with a different instructor who suggested I try sitting on a cusion.
It's amazing what a difference it makes when you can see outside.
Other tips: Focus in the middle of the windscreen in the flare and use periferal vision to judge height and avoid "ground rush"
Don't be in a hurry to "slam" the aeroplane into the ground
and remember the instructor isn't going to let you bend the plane while (s)he is on board!