Ok I'll do this quick, I'll just give you some tips:

- I don't really like the build, but oh well this is not that important, the important part is the guide itself so lets focus on that.

- Some of your tips are too obvious and not really helpful, for example: "Use your Gatling Gun every time you engage enemies."... That's just way too obvious, this tip won;t really help anyone. Try to give relevant and helpful tips, and if they are too obvious there is no reason to put them in the guide. If you want to improve this tip, you can explain when you should use E and when you should save it, something like that.

-I am not sure you fully understand Corki. You are puting way too much Emphasis on his W skill. Yes he has the best escape/chase ability out of all the AD carries, and its great, but its not what defines him. What defines him is his crazy AOE burst and sustained damage, armor shredding, poking, and also his escape ability. But again, you are saying things like "he is overpowered on escaping, catching, dodging, and general range." Way to much emphasis on his one W ability. Also he has a very short range... I understand that you are talking about his R, but if you really want to deal a lot of damage, you have to get very close.

- Clarity- No. Just no. I don't care if being oom sucks, just a big NO! You are all for conserving health by starting with only 2 health pots ( which makes no sense at all), but for mana you are willing to sacrifice a priceless summoner spell? If you have mana problems, use mana regen seals, or buy manamune.

- Again I feel that you don't really understand Corki. You say that attack speed is very important on Corki, when actually AD is the most important, while Attack speed is less important on him. Yes you can get attack speed to hit more times while E is on, but if you get more AD, you will hit harder for every hit, AND your E will do more damage every tick. AD also scales with your passive and with your R. Wits End for this reason is a terrible item for Corki, since he does not scale with attack speed in any special way other than with his basic auto attacks.

- About the pics: people put their stats on their build because they want to show the reader that they know what they are talking about, and give the guide credibility. But the pics you posted are not really achieving these goals, try getting and posting some more impressive stats :)

- And plz delete the Corki spotlight video... Phreak is really bad with Corki, he played against some really bad players and he uses W so bad :/

Hm that was not short at all lol, I hope I helped :)
Your guide really reminds me of my first guide I wrote. It was for Akali, I was a newly level 30 player, and was in low elo, around where you are in the 1200 area. Keep playing with Corki, and update and improve this guide as you get better at this game and at Corki :) Good luck!

UPDATED! LOTS OF NEW ADDITIONS!
Please read through it thoroughly for best results!

Thank you! I will improve it soon! I just wanted to get it up there asap...
I appreciate your comment!

This guide isn't bad by any stretch, but it isn't great.
You could of added more depth into his laning phase, who are potential threats, etc, etc.
Along with that, you may of added WHY those summoner spells are bad on him outside of "Worthless, not viable." That's not true at all.

Otherwise, it was a decent build, and I would like to see you improve upon it.

+1