Thanks for your reply Scott. So, as elpablo said, the conclusion is that I should construct a deck with simpler mechanics (white aggro) which is more easier to play with.
I agree with you, it's a very good thing to do....but....I'm not really into the aggro decks, I don't know yet the "constructed deck archetypes" 
but I think I would try to play in my deck with more interesting mechanics, even if I lose a lot on the road.
So I hope you won't be upset with me cause I'm a little stubborn and I wont follow your advice.
PS: I got for my deck 2 new cards (Obzedat's aid and Azorius charm) 
1 2013-05-16 07:27:17
Re: Need some help with my Orzhov deck (10 replies, posted in Decks and Deckbuilding)
2 2013-05-15 13:04:15
Re: Need some help with my Orzhov deck (10 replies, posted in Decks and Deckbuilding)
10x for all the info. It's really hard at the beginning to construct a good FNM deck. I don't have a lot of good cards and I try to combine the best of them. I'm thinking to buy a duel deck or event deck and use the white cards that I have to build a real competitive deck . Do you have such a deck in mind (event/duel)?
3 2013-05-15 05:33:23
Re: Need some help with my Orzhov deck (10 replies, posted in Decks and Deckbuilding)
10x for your reply elpablo. So you're saying to renounce even at the "Extort" mechanics?
Anyway this really makes me think, it makes sense what you say, to do a deck only with decent cards . I thought that a deck is stronger if you have a lot of different mechanics to play with, thats why I try to make a 3 colors deck (gain life, removal, draw cards, etc).
4 2013-05-14 17:14:12
Topic: Need some help with my Orzhov deck (10 replies, posted in Decks and Deckbuilding)
Hello, I'm relatively a new player in MTG world and I'm trying to build a 3 color deck. Any suggestions woud be greatly apreciated . Thanks.