Well Thank you For your advice, I'll be sure to make some changes in the Build (:

You display a sound base of knowledge as shown in certain particularly chapters such as: Skill Sequence/Explaination & Summoner Spells. Some areas could do with a tad refining along with other sections may be warranted like Runes or Masteries.

Pros/Cons

I'd give some description of his mobility since that is the defining aspect of Lee Sin which he is most notable for with the use of Sonic Wave / Resonating Strike and Safeguard. You should have the word "Knock back" somewhere when talking about Dragon Rage as to give a more complete emphasis of its capabilities.

Skill Sequence/ Explaination

Acknowledgement on how Tempest / Cripple can attenuate AD champions and particularly AD carries offensive power for example Vayne with the extra bonus of crippling the effectiveness of Silver Bolts.

Can make note of how Safeguard / Iron Will can also be used on any ally function like Noxious Trap.

Jungling Sequence/ Items

Atma's Impaler (with Warmog's Armor) will offer the same attack damage (later more) as a fresh Bloodthirster without the worry of losing your stacks or building them up. The likelihood is that you will be the initiator or tank if you would say of your team thus you'd be needing that extra defense and even with Lee Sin mobility if he gets locked down he can be left vulnerable thus won't always have reliable amount of stacks up. Gold efficient per stats wise Atma's Impaler stomps Bloodthirster. Even if really fed you'll be stretching your pockets to afford Trinity Force, Atma's Impaler & Warmog's Armor taking into consideration your buying a feasible amount of wards you should be doing and possibly Oracle's Elixir. Hence, why it isn't really worth selling Wriggle's Lantern - the on-use ward can be useful for escapes and chasing as well.

Youmuu's Ghostblade at this stage of the game in which you'd be buying it (late-game) won't be really that effective due to the amount of armor people would have (20+ ARP isn't much). Alternative more attractive options would be Last Whisper, Black Cleaver, Guardian's Angel etc.

Runes

I know you didn't include a section on this but I felt it was important to evaluate your choices nonetheless. Greater Quint of Strength are better due to superior ratios in comparison to Greater Quint of Desolation. Armor Marks ( Greater Mark of Armor) and Attack damage Seals ( Greater Seal of Attack Damage). Your better of going with Greater Mark of Attack Damage as Marks and Greater Seal of Armor as Seals as that will grant you extra stats in their respective areas due to the better ratios. If the enemy team is running double AP then Greater Glyph of Scaling Magic Resist would likely be of better value then health.

There is no more rally. But still it's a good guide :) +1

Voted + , but i coulkd advice to buy warmogs earlier