What do you think about my dps

[Linlyn 0]

Hello, 
I would like some advices on how to improve my DPS. I'm currently playing the build with Chaos Blades as final talent. (- First blood + Master of Glaive) 
And as raid player, I would like to become a better demon hunter ^-^. 

So here's my logs on a fight we did in my guild : 
I'm usually top 5 DPS, so I'm not that bad but I feel like I could do maybe better. 
 
https://www.warcraftlogs.com/reports/dFxM9wTGbagNQPYJ/#fight=4&translate=true&view=analytical&type=damage-done&source=11

Here's my armory : http://eu.battle.net/wow/fr/character/culte-de-la-rive-noire/Linlyn/simple

I'm 893 ilvl. Without any flask/food my stats are : 37 % crit / 12 % hast and 37 % mastery. 
I feel like I'm quite mastering my dps cycle but sometimes I have the feeling I losing something. 
So, go ahead and tell me everything you think about my way of playing. 
I'm here to become better :) !

Btw, please excuse my bad english. Doing my best to be understandable.

Thanks and see ya :) !