RE: flying away and landing
Here's a "trick" I use. On my landing approach I do the downwind leg, turn into the cross-wind leg, and when I think it is right to do the upwind (landing) leg, I wait two or three seconds before I turn in (the plane should be flying slowly already). Then, (this is my trick)... I fly the plane *directly* at myself (our pilot stations at my field are about 10 meters from the runway area...). I do the whole landing directly toward myslef, keeping the wings level, and the plane comming at me. When the plane comes into the "inner circle" (that space where it is suddenly "close", not "far"), I gently turn the plane parallel to the runway, and it should be right over it.
This method does not guarantee you will be over the runway, but it *does* ensure that you fly a consistent approach *every* time, and that you can use the consistency to iron out any gremlins from your approach.
gus