I like your general views and suggestions throughout the guide except for the item chapter which you really need to update.
1) Wit's End isn't viable anymore
2) It simply isn't true that health is better than resistance (looking at you Warmog's). Not in general and especially not on a life steal champ like Irelia.
3) Sunfire Cape doesn't do any damage late and doesn't have nearly as good stats as Randuin's and not to mention Frozen Heart which isn't even mentioned in the chapter.

Do yourself a favor and update the item chapter asap to match the item suggestions in the top of your guide.

Also your skill chapter recommends to max Q 2nd instead of E contrary to your (updated) skill sequence in the top of your guide.

Wow man, i just finished reading this guide, its awesome thanks for the upload :) up vote!

Thank's for the answer! It would be great than you refresh your item build in the top section (to don't confuse other new comer to your guide). +1 rep to you summoner!

Well this is slightly outdated, and ninja tabis would be optimal because now we build Zephyr, I dont like rushing bork early, because i feel your role being a tanky assassin just makes botrk first just bad unless you going against mundo or renekton. Double dorans are good if you cant afford a giants belt and want more tankyness

Hi Le Pro Of Doom! I really enjoyed your guide I and started to play Irelia a looooot this week be cause of this guide!

I would enjoy more explanation about early start itemization and your starting items choices.I found building Wit's end Mercury's treads before Warden mail... Way too much magic resist for vs ad lane early on. I personally go Crystalline flask, 2 Doran blade, boots, Warden Mail, Phage for early/mid game.

Could you do explain your recommendation for early game? Like the good explanation for not runing BotRK.

This guide is amazing! Don't really care about the spelling, as long as I could understand what was basically being said. Although there needs to be more of a match up section. Great guide though, very detailed, Love it. Upvote for you!

In SITUATIONAL ITEMS you have x2 Youmuu's Ghostblade :) For better look you should delete 1 ;d

Fixed the runes, and i'll try to get to work on less pictures or somethin :3 thanks for feedback!

@9Ball Thanks for your vote!

Nice build. I like the fact you build an attack speed item ( Wit's End) before finishing your Trinity Force. Most of the guides out there just say to rush TF, which I strongly disagree.

Another thing is that you should consider buying a Giant's Belt somewhere before Trinity Force. Just my 2 cents in the matter.

Well done, +1.

Scaling MR runes
"In lane... what do you do?" section and below, colors/pictures begin getting a little... "out of hand"
Otherwise, nice guide.

Good guide, but I think you need to organize the item guide a bit more. Even I am having a hard time understanding the order of which items to get.