Overall: Good start for a guide. Needs a little bit of improvement. Don't forget to turn on "Comment to Vote". So, you don't get troll voted your first 20 votes!

Grammar: Nothing that I could find.

Visual: Your images are kind of large making the text awkward. Maybe make the icons smaller so, it doesn't look so strange. Maybe, adding a banner or video? Just some suggestions. :)

Any who +1 from me, great start keep at it.
I adored that you did a build for both AD / AP as well as with stacking items.

I used to look at "Poppy - a scary carry" guide, but to be honest AD poppy should gtfo. This guide opened my eyes: 2nd and 4th build are good. I don't think that 1st+3rd build is viable (AD Poppy). She is an assassin == should burst people to pieces with Ability Power.

The only reason to go AD Poppy is if you dont have a real melee AD Champ (Wukong, Trynda, etc). But she does not add much value in terms of abilities to a team built as AD, tbh.

Devastating Blow is Poppy's most constant source of damage; it has a shorter cooldown than Heroic Charge, and to really deal damage with Heroic Charge you have to pin them against the wall to trigger the stun and extra damage, which is not always possible in every scenario.

As for starting items, I personally like to start off with the 435 gold Tome that gives a small amount of Ability Power (I forget the name of the item), because I like to get my Kage's Lucky Pick as fast as I can so it benefits me more.

I really like the 2nd and 4th builds AP poppy is awesome except that i don't totally agree with starting with Devasting Blow because Heroic Charge to terrain placed with an ignite pretty much assures a kill. And i don't know why but i tend to start with Mana Crystal for the early game staying power and those i wish i had Herioc Charge up moments. but i seriously like the build Fantastic Job.

AD Poppy deals more consistent damage as it relies on auto-attacks, while AP Poppy is more of a burst mage. They are both really great picks, however, just comes down to personal preference.

What are the differences between AD and AP Poppy? (great build btw)

Only for experts ;)

I have to say the thing i enjoy most about this build is your use of Sword of the Occult and Mejai's Soulstealer in two of them.

Thanx, corrected :D, She was 1350 when i bought her lol, she had an IP reduction, and as for the guide, loved that you enjoyed it :D Thanx for the support! :)

I like how you put Poppy's picture every time you mention the word "Poppy" lol

One grammar error I found was under the Pros you listed, you wrote "Takes out even TANKS with easy"

Also, under the introduction you wrote that she costs 1350 IP but she now costs 450 IP.

Other than that, extremely helpful guide, I love how much detail you put into it. :D

Awesome Guide:P Love itttt!

THANK YOU! FINALLY SOMEONE COMMENTED! xD
lol in all seriousness though, thanx, and i hope it'll help you a ton, thats all i hoped to achieve :D