Ok. Smithing perks work as to allow you to refine items and armor better than you could otherwise. So, for example, you can't refine a steel something past "fine" unless you get smithing skill of 31, or you get the perk and a skill of 22. So...

Which of the smithing perks applies to foresworn armor? If you look at http://www.uesp.net/wiki/Skyrim:Smithing#Item_Quality you can see that exquisite normally requires a skill of 65 (without a perk). I can make exquisite foresworn armor, and I'm at skill level 75. Ok. However, you see that you can't improve it to flawless unless your smithing is 100. That is, of course, unless you had the right perk! And the perk is...

Well that's my question! Which of the smithing perks allows me to make flawless foresworn armor at skill 57? I would have thought it would be steel, because foresworn armor is upgraded with a steel ingot, but that doesn't seem to be the case. Is it Glass, Ebony, Daedric, or Dragon?

Or... gasp, isn't there one? Am I never going to be able to craft Epic or Legendary foresworn armor? That can't be right.

Some items doesn't benefit from the material perks.
You'll have to fortify your smithing to around 196 with potions and enchanted gear to improve it to legendary.

http://www.uesp.net/wiki/Skyrim:Smithing#Item_Quality

That's lame. They should tie all armor to one of the mastery perks.

Pretty sure a lot of the uniques don't have a perk. Like shrouded armor, etc. There's so many uniques, its hard to tell which will and wont work.