My guide to play Vayne and OWN to 1700+ ELO is this
Skill Order:
Q(or W if u are at blue team and do golems) -1
E(Q if u did golems) -2
W (E if u did golems) -3
Q -4
Q -5
R -6
Q -7
W -8
Q -9
W -10
R -11
W -12
W -13
E -14
E -15
R -16
E -17
E -18
Builds to win with vayne (early, mid, late game):
Black Cleaver, Bsk Greaves, PD, PD, QSS, IE or BT (Works too well to get early win)
Black Cleaver, Bsk Greaves, Trinity Force, IE, QSS, BT (Works too well to get mid game win)
BT, Bsk Greaves, BD, IE, QSS, LW (Works too well to get mid/late game win)
My prefer build is this one:
http://leaguecraft.com/builder/Vayne/?items=73,83,89,60,97,33&runes=38,38,38,38,38,38,38,38,38,63,63,63,63,63,63,63,63,63,57,57,57,57,57,57,57,57,57,10,10,10&masteries=0301400410013030110304001000000000000000000000000&level=18
Lvl 1 Boots +3 Pots
If u can affort rush BF Sword if not buy 1 or 2 Doran's Blade then BT
Get PD
Too much CC owning u? get QSS if not get IE
Get IE or QSS if u dont have it
Get LastWhisper and win ur game