Ok, the way how i do my ev training is. I start out by getting all the power item for ev's plus the vitamin an the pokerus, so i look for the right natur, so when i get the right natur i start put the power item that go's with the natur an then put the pokerus plus the vitamin, the natur i got was adamant natur, so I put 8 vitamin in attack, 8 vitamin in speed an 4 vitamin in HP, after i'm finish with that, then I start killing the pokemon that gives Ev points to that stats that i put vitamin in plus the natur, so I kill 13 gyarados for attack, killed 13 staravia for speed an I killed 4 graveler for def, after I've complet that Ev training then I fly to snuyshore city to see if I'm really finish with ma Ev training, so she give me the Effort Ribbon, after I've get that thing then I'm finish with the training then its time for leveling up.