all you have to do is get evee to lvl 47-48
actually no u dont
If you have an Eevee you can get Umbreon or Espeon. First you need a level 39 or under Eevee. If you give it hair cuts,use it in battle,or give it EXP SHARE, it will be come happy. That's how it becomes Umbreon or Espeon. But the thing is if it becomes Espeon it has to be in the day. If you want a Umbreon you have to do it in the day. Hope it makes sense
If you want a Crobat you have to do the same thing with the Eevee tip. It has to be happy
If you want a Blissey you have to have a Chansey that is also again happy