My first mistake was in first 2-3 days I started. I download the game to my android and tried to find cheats for getting better my team LOL.
After that I realized what's going on, I logged on f/b and join the forum. No more mistakes - just kidding

Ok , the mistake I made and cost me more was before a semi-final in Cup, season 2, I power trained my players, give them green packs and played 1 hour after that. My team collapsed
I loose the chance for my first treble.
Check also this older thread
http://forum.topeleven.com/top-eleve...-were-new.html