its different for everyone
i just slow things down in my head and it makes everything easier
dont put any emphasis on sensitivity because it doesnt matter so long as youre comfortable with whatever. u can be good with a 40 inch sens and a 4 inch sens it doesnt matter
its got nothing to do with flicks or arm placement or tracking or anything like that
if you play something aim intensive and then approach it with the mindset that its experimental and the result doesnt matter, like quake clan arena, then eventually you work out what works for you. its just trial and error
asking this kind of shit on the forums is meaningless cause we all are aiming differently and got to whatever level we are at differently and it just depends on how u plau