They are very easy to make, but you can get some from pro players too i think. (Not from me though, i use stars as fruits, it all comes down to preference.)
Depends on whats going on and on the map but generally ill look at the middle, slightly below the combo counter. Again thats a matter of preference for the most part but the higher you look the more heads up you get and the lower you look the more feedback on how you caught the fruits.
That said, i usually look down when im catching a slider or stream to make sure i catch all the droplets too, up when theres a break but mostly at the middle like i said before.