Here's my initial impression: you're doing a lot of different things at once, and it's hurting you. You have Midrange elements, Aggro elements, and then some more random stuff. You have a lot of inconsistencies in terms of your card-base. Are you going Predator Ooze aggro? Naya Humans? Naya Weenies? Right now you're actually running a majority of Aggro-type creatures. The only things that aren't really aggro are the Foundry Champion, Aurelia, and Collective Blessing. I mean...you can definitely go Naya Aggro. A human variant just won 1st at a SCG Standard Open.
It depends really on what you want to do and how...meticulously you want to do it. I say "meticulous" because "competitive" is too...elitist, I think. You can make a good deck without planning for it to win a PTQ or a GP and fall into netdecking territory. You can make something original and good. It just needs to be well-planned and well thought-out.
The real issue, however, is your mana base. My Naya deck goes all-out with the nonbasics. 9 Shocklands and 5 Taplands (along with 2 Caverns, 2 Kessig Wolf Run, and 2 Slayers' Stronghold)...and only 3 basics...and even with that I still sometimes struggle to hit the right color combinations without Farseek assistance.
Artifacts: neither is very good. No need for them.
Green: Without a full suite of either Arbor Elf or Avacyn's Pilgrim, neither is very effective on their own. I prefer the Pilgrim overall just because it means you're always getting the extra mana and not just sometimes. Predator Ooze and Blessings of Nature don't quite seem like they fit here. Ooze is no doubt very good, but shines in decks built specifically for it like BG Aggro. Rancor is also a strong Aggro card, since it's essentially a cheap, reusable enchantment.
Multi: This is where your aggro-midrange decision seems most...unsure. You run a lot of cheap swarm-y creatures and 3 big things. It depends on which way you want to go, really, but I'd take the full set of Smiters over the Skyknights, and reconsider the Dryad Militant and Halberders for other more midrange-y creatures and spells. Selesnya Charm is very good, Aurelia is a Bomb. Not sure if Foundry Champ is good enough, but you can test him out. And Collective Blessing is actually better in a load-up and swarm strategy (just make sure you hold back mana for BOROS CHARM in case of a board-wipe). I'd cut Burning-Tree completely since there's nothing you have that actually uses the RG mana cost.
Red: This is pretty much straight-aggro except for Chandra and Thunderous Wrath (which was actually played in some RDW variants at the start of the season). Chandra is best in a spell-heavy build, which you don't have (The good Midrange Walkers in these colors now are Domri and either Garruk). And I'd prefer cheaper burn than Thunderous Wrath.
White: Not much to say, other than that Odric works well in a more aggro/swarm mentality build. Entreat is less good with cards like Sever the Bloodline, Detention Sphere, and Homing Lightning in the format, and Herald of War is only good if you have enough ways to get her out fast, keep her out, and take advantage of the reduced cost. Right now, the only creature's she's facilitating are Odric (by 2), Zealous (by 4--most efficient), Skyknight (by 1), and Aurelia (by 2)...none of which is that impressive.
It looks like you're trying to actually build Naya Aggro. Which is certainly doable. Without building the deck for you, I'd suggest looking into cards like Firemane Avenger, Ghor-Clan Rampager, Boros Charm, Boros Reckoner, and Boros Elite. Those work very nicely.