Lulu main needs help!

I am a lulu MAIN. I love this champion to death, she is just so fun to play. I have been trying to go at m6 for her for months now (I'm currently m5). And with no luck what-so-ever. bad games, terrible adcs. ect ect. But this time I had a perfect game. I honestly don't know how I didn't die. But I really REALLY wanna know what I need to do to get me those S's I desperately need. In the link is my most recent game where I went 1/0/23. Which I think is a really REALLY good kda, 16 wards placed, 28 vision score (highest in wards, and vision score) 44 cs. And I get that's bad vision score. And that its based on all lulu kda's but what did I do wrong, HOW do I improve. I really want this. Please help!