Ok, we lets discuss about pick a bit, I havent been playing dota for 3 months till 2 weeks ago so I need to refresh my memory and take a look at new picks. I suggest this:
tide-ryali-slardar-lich and some solo mid hero preeferably nevermore.

thats some balanced pick, now about some fast pushing pick:
pit lord-enigma(mid)-chen(forest)-and for example ryali+panda/sven for 1 strong lane.

Tonight we lost all lanes which is really bad we might be good in team play but we are losing lanes too easy, I also need some improvement, I am in really bad for as carry hero player...

or how about this pick?
(sentinel side)
bottom-naga siren
top-akasha/morph/warlock
mid-rexxar
bottom,roam-venge,ogre/ogre,sand king

bans:axe,shaker,slardar,seer

Top: Axe and Dark Seer
Bottom: Necro
Forest: Furion / Chen
Middle: Tinker - having such great positioners (except of Necro) it'll be easy to initiate and let Tinker get gank correct

Necro and Tinker carries.