Eh, I can't make decks that well but I'd say..
-1 Vampire's Curse (Not really a good card..)
-1 Ryo Kokki (Not needed, you can keep it if you want)
-1 Il Blud (Not needed IMO, you have Zombie Master)
-1 Zombie Master (I think 3's too much..)
-? Pyramid of Turtle (It's an optional card, if you want to make a proper Zombie Deck then it's good to have but that doesn't look like one, -1/2 definately..)
-1 Summoner Monk (Really not needed in this deck o.o)
-2 Fiend of Raven (That discarding card =\.. again, not needed..)
-2 Zombie World (Reason the same as Pyramid of Turtle..)
-1/2 Call of the Mummy (Reason the same as Pyramid of Turtle..)
+1 Spirit Reaper
+1 Mezuki
Can't think of anything else.. but that's just my opinion, ain't really a good deck constructor or fixer