-1 Boring to read (no BBcoding) Lee Sin gets banned in competitive play, what? Finally so short.

Too focused on ward-jumping. Yeah, its cool, but Safeguard is more versatile than that. Go more into detail and better describe the situations at hand.

The Lee Sin really get banned alot in competitive play? I mean, I'm not high ranked, but I've yet to see anyone ever ban Lee Sin in any game... Even on streams.

You outta check out Lagger's and Jhoi's guides on writing guides, along with the guides on BB coding. Although it's nice that you atleast tried inserting some videos, it's still overall a pretty gnarly guide.

How do you write a guide if you don't even know which skill to take first?

You got most stuff wrong and the guide is pretty much incomplete.

Short, lack of coding, bad seals, and forced title.

-1

You really need to expand on your items section also add some images and coding.
I Don't play lee sin, so can't give much advice on the build other than armor seals greatly help your early game, and win early game usually = win late game.