Forum:I need help! Working on my Zombie Mill. Suggestions?

Here is the deck.

I've had this deck for a long time, and with the new starter deck it gave a bunch of new fun cards. But I'm having trouble with it now and I need some help. I don't know where I'm going with it anymore. It's a mill deck, but with all these new decks coming out it's hard to keep the strategy in line without my thought wandering. Someone please help me out. It needs to be an Undead Mill deck above all. If I can get some lockdown in there I would be even happier.