Can someone give a feedback about this deck?
http://deckbox.org/sets/462724
It's my first Deck so I don't know if I can win with it or not :)
Please help me with feedbacks :)

Give us some more detail. How do you plan on playing the deck? FNM, casual? etc? What's your budget like? What cards do you have access too? (friends etc). What format? Standard? Modern?

Right now you're deck includes cards from a couple different formats.

In general, I can say you need more lands and better lands. If you want to get to 6 to cast bigger cards you need to be able to ramp consistently and/or play lands more consistently . I'd say 22 lands minimum and try to include some ramp (mana elves) like Arbor Elf, or Elvish Mystic. Also, get some shock lands like Stomping Ground and some check lands like rootbound crag.