Personally, I like to land dead stick after making a split s for my final turn, but that won't work for your trainer.

It just takes a little practice getting to know when and where to chop your throttle so your speed and descent will hit flair speed in the middle of the field.

Just practice approachs and try to get the speed correct at the correct time. I also agree with when you make the final turn, to aim it at you, the plane is never as close to you as you think it is. You can adjust it out slightly if needed.

And always keep your wings level near the ground...