I made changes time by time, i started with the winglets the thin ones tries toe in, toe out and straight.
After several flights i made the bubble version for better handling in windy conditions.
When that was right i added the rudder flair for more drag and the plane heads better.
It is always better to make a few flights with a new modification with different wind conditions.

I'm currently trying the "zero gravity" flying method but that takes a few flights to get used to.
The first flight where terrible !