Your guide is awsome
I play a bit different now, than the way ur guide "taught" me but the basics are the same
But one thing i dont understand.
Why dont you try out Ignite^^
In early game it will double the damage the one running away from u recieves and it saved me quite often my first blood and also in late game it can give u a kill fighting lightweights like master yi or simialar.
Further something for your item list.
Ever tried out "Shurelya's Reverie" because i tend to buy it if i get to much damage to often.
Plus it also gives u a speedboost with its active unique if u want to run after someone.
So if someone has the guts to tell you that he's faster than you only because ur ghost is recharging you activate ur unique and he won't ever try to not give up.
If Red Stapler should ever read this.
Masteries are a matter of taste, i for example tend to just fill most of the utility thread... the offence is not needed since u dont kill with autoattack, defence is not needed because ur unkillable anyhow, so what u need is the experience boost the speed boosts the reg boosts.
You could also take the ability boost but when you hit lvl 18 you already have 300+ AP anyhow.
Well speed, magic penatration,cooldown reduction,manareg for early game and well...
so for example:
9 Marks of Insight
9 Seal of Clarity
9 Glyph of Focus
3 Quintessence of Swiftness