Personally I don't think Mime Jr. is worth training but here goes:
Mimic (good on powerful foes and needed to evolve)
Tickle/Calm Mind (set up to hit hard)
Drain Punch (good coverage and regains life!)
Shadow Ball (good coverage)
After he evolves it might be a good idea to teach Psychic for Mimic; you won't be needing it anymore and it has AMAZING STAB.
Good luck training!! =)