There's a reason I never play support.
http://dotabuff.com/matches/601312090
It's basically almost all of my support games ever. I try to mimic what I see pros do and stuff and it never works, I just die as I try to do anything useful because I am too squishy. Keep dying because I have no farm. Can't contribute to ganks because if I even look at the other team I'm already dead. Everything that could go wrong did. I tried to smoke gank the Invoker mid with Centaur, guess what, he happened to start walking the other way and I couldn't catch him because I had no fucking boots because I had no farm.
I honestly have no idea how people play support, because every time I try it I just do terrible at it. The only games where I play support and win are under one of the following circumstances:
1. A teammate is snowballing out of control (Pudge, Terrorblade, etc.)
2. It's some really cheesy combo that works well (KotL + PL of old, Void + Skywrath, etc.)
3. The other team is lot worse than we are
4. Sheer force of luck