Unblockable Pauper

Of course I want tips! I've only been playing a short time, and I don't know a lot.

As for the pauper format: Pauper decks contain only commons. There is a subformat called peasant which may add up to 4 uncommon cards to a pauper deck, but from what I remember this is no official format

First here are some more common creatures with 'unblockable'
Blighted Agent ({1}{U}; 1/1; Infect; Unblockable), Keymaster Rogue ({3}{U}; 3/2; Unblockable; When Keymaster Rogue enters the battlefield, return a creature you control to its owner's hand), Neurok Invisimancer ({1}{U}{U}; 2/1; Unblockable; When Neurok Invisimancer enters the battlefield, target creature is unblockable this turn)
I would at last take a look at "Blighted Agent" and "Keymaster Rogue". The Rogue can be pretty useful as he is a strong creature (for a blue unblockable) and allows you to use cards with 'enter the battlefield' effects again.

Now for some buffs/ combat tricks
Steel of the Godhead ({2}{U/W}; Enchant creature; As long as enchanted creature is white, it gets +1/+1 and has lifelink. (Whenever it deals damage, its controller gains that much life.) As long as enchanted creature is blue, it gets +1/+1 and is unblockable), Mizzium Skin ({U}; Target creature you control gets +0/+1 and gains hexproof until end of turn; Overload {1}{U}: You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each."), Hands of Binding ({1}{U}; Tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step. Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.))
Again, I would at last take a look at "Mizzium Skin" as it allows you to protect one of your creatures against removal, which may be crucial. Personally I like the 'Cipher' cards, because they allow you to cast a spell every turn without paying its mana-costs.

At last I would add "Azorius Guildgate" to stable your manabase a little bit.

Wow, awesome cards! Is this any better, or should I keep trying?

25 Lands seem to be a little bit on the high side. Do some testgames, if you feel that you're drawing way to many lands, try to reduce it to e.g. 22
If you feel that you draw the wrong lands, you could add some searchlands like "Evolving Wilds" or "Terramorphic Expanse"
Otherwise, looking good now :)

Unfortunately, I can't play test this deck, I don't own some of the cards. I only own the original deck, and none of the new cards. Thanks for the help mate!!!

You could print them as proxys to give it a test.
Under "Deck Options" -> "Proxy this deck"

Didn't know that's what that meant! Thanks!

From what I was told, Pauper decks contained no rares, so I thought it was the right name. And thanks for liking it!

I thought it meant common only. Okay so which is correct? still a good deck.

It's all commons now, so it's Pauper.