Little shaky on masteries, can see why you get the MR glyphs to make up for the armor you got in masteries, maybe put those 3 points you put on defense tree into your utility tree? i don't know, just looks a little odd with the runes/mastery set up... I suggest maybe get 3 points into the skill on the offensive tree: Sunder? it would work well with your crit dmg and everything else :P ok, good guide in progress though

but thank you for the comments/suggestions

Will do i am still working on this build right now its not complete yet

Why get masteries on Magic Penetration if Lee Sin is AD...? Also, you stack attack speed with him when he is better with Armor, and maybe include some pictures or something to show how to play him well??? Anyway, add a LOT more stuff to this build, and I might vote it up.