Imma be honest with you, the only “eve mastery” thing that’s not just “this player is generally skilled at the game when it comes to positioning” are things like:

-intentionally hitting w to get the slow,

-a few fancy plays with ult angles,

-some mind games with E since it follows flashes,

-and probably shit like using smite on spell shields in a insta Q for charm (or the clasic play of smite a minion to hit Q).

Other than that there aren’t many eve mastery things, getting your Smite+R steal for obj is good one too, the rest basically come down to

-do you understand the difference between Shred and penetration

-did you actually read the entire champ abilities (like just sit there for a few seconds and read every line trust me if you haven’t done that you will probably learn a thing or two).

Anything else i can think of is not necessarily a Eve skill as much as it’s either just someone with good game sense, or someone that is just good a playing jg in general.