Definitely need to elaborate upon your choices. Especially the masteries section. "Like his runes they're pretty standard 21/9/0 ADC masteries." Why are they standard masteries? Why should I choose them? Talk about every mastery and why they are good on Twitch. And on runes, you say they give you extra sustain and that they're "standard" but why? Why isn't 0/9/21 "standard"?

You also have unnecessary titles for each section, giving them double titles. Might want to fix that. Instead of highlighting abilities and names, just use [[twitch]] for Twitch.

Honestly, you don't want to show any games where you lost, unless you got really fed, like 19/1/2 or something.

Especially labeling a section "LOL IDK" doesn't make it seem like you take your guide seriously.

For more information, see the official Guide Making Help and Tutorials thread