Right off the bat you don't have neeaaaarly enough lands.
Your average CMC is 3.54, you should never go under 36 lands with this average CMC, maybe even 37.
All my decks are under 3 average cmc and only one of them runs 35 lands, all the others run 36. With your current manabase you'll be missing land drops like crazy, and your deck will most likely be way too slow.
I'd also work on reducing your curve, if I were you. I personally like to keep my average cmc as close to 3 as possible (and even under, if I can) to ensure my deck will be fast enough, and to ensure I have enough 1-3 CMC cards to reliably always play a card on turns 1-3.
Obvious stuff you're missing, at first glance:
Sol RingDimir SignetAzorius Signet (instead of the 2 lockets).
If you'd like other cheap mana rocks,
Prismatic Lens,
Fellwar Stone and
Mind Stone are all 2 CMC, and would be better than
manalith (I'd almost suggest you add all of them, since you have no access to Ramp due to playing an Esper deck, running more mana rocks is usually recommended so you can have some type of acceleration).
For more draw,
Ponder and
Preordain are usually staples.
Path to Exile and
Swords to Plowshares for removal.
Counterspell,
Swan Song and
Arcane Denial for cheaper counters.
Things I'd personally cut:
Greed (I personally prefer
Arguel's Blood Fast, personally, as it comes into play earlier, this would reduce your curve and would give you a draw on turn 3 potentially, instead of turn 5).
Cruel Revival,
Devious Cover-Up and
Killing Glare all seem rather expensive. My personal removal choices would be
Hero's Downfall,
Anguished Unmaking, and you're also missing the obvious
Swords to Plowshares and
Path to Exile as stated above, which again would massively reduce your curve.
Otherwise it also seems like most of your reanimation brings your cards back to your hand, which means not only will you have to spend mana to use those reanimation spells, you'll also have to cast your creatures again. Finding cards that bring creatures back to the battlefield would most likely help this deck be faster as well.