Yeah, I've taken some stuff out and added a couple things, I just haven't had time to update on here. I'd say yeah you probably have too much land. A card that is good to use is Fog Bank. Also, Guard Gomazoa. They are defenders that prevent all combat damage, so you can use them to easily defend you without wasting creatures. Another good one is Mortus Strider. Of course all of these don't help with the whole mill part of the deck, but they help protect you from dying.

Edit: I have now updated my deck. I took a few things out and put a couple things in. It's still not that great at milling, but it works alright.

Hi guys! I came across the deck, Dimir Dementia, which seems to be kinda based on milling which is the kind of deck I want. I added quite a few cards to Dimir Dementia from my Black/Blue milling deck and this is how its turned out: http://deckbox.org/sets/326002[1]

I have no idea what to remove, and I dont really have too much money to spend on new, expensive cards, and I don't really want to add any more to the deck. And I haven't really been getting a very good draw. Can someone help me out and tell me what would be good to remove?