I'm only 2.5k but I learn a lot watching pros stream and also a bit watching pro games. How many games have you played?
Be comfortable controlling your hero, knowing what can kill you, looking at other lanes and missing heroes before you act, prioritizing objectives after kills. Then:Guys give me tips to improve my MMR.
At 2.9k now. I reckon I can at least go 3.5k though.
http://dotastrategy.com/
http://chaqdota.wordpress.com/2013/09/05/chaqs-ultimate-guide-to-advanced-solo-middle/