Lets finish this! - Last 2 placement games

Duo queue with a friend. yes yes I know I said I wouldn't do that anymore, but... come on, it's more funny when you're in the right mood!
First queue, I ask for support, someone answers "no me supp or troll". Couldn't find out if he was joking or not, cause someone left.
Second queue it goes ok, I go bot as nami with a random Vayne.
Our Lux mid disconnected every now and then :-/ I even spent some time mid. Our Vayne was a bit slow and got caught often, but in the end made up for the bad start.
Amumu + Nami ultis were a deadly combo, and my friend Jax (who managed to get fed early) carried the game while Vayne was still farming.
Eventually we won even if we were 4 vs 5 :)

6 won 3 lost... 1 to go!
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Last one, I go bot with Ez as Nami.
Ok, listen... sometimes I know when I do a good job, and in this game I was really good. Enemy mundo got fed top and there wasn't a way to stop him :-/ our team didn't focus the carries and so they won "easily". But bot won the early. Why can't I carry the games I play so well? Oh right... 'cause I'm support -.- sigh.

6 won 4 lost, so lame :(
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So the placement matches end, and I find myself at 1292 ELO. Well, better than nothing I guess... but still, I have the feeling that I really could be at higher rating. But will I ever be able to improve my elo, if my skills improve? Until now I just feel that its all a matter of luck :( If the matchmaking system queues me with monkeys I lose, if they are on enemy's team I win. When will the real support skill matter?
(QQ)