Thy sins
1. In my experience, captain enchantments are a waste of money, especially for a champion as Janna that does not engage herself. As captain only works on approaching allies.
2. Cheatsheet missing trinkets.
3. Add ardent crenser as an actual item in the cheatsheet instead of putting it in the note.
4. No tactical section
5. Weird chapter order. Put all build chapters behind eachother (runes, masteries, summoner spells and items) with items as the last one.
6. The majority of explanations are way too brief. Don't explain what the things you picked literally do, explain why it is better than the other options.
7. There are chapters that are wellstructured, but the summoner spell and synergy chapters can improve by a lot. Use the structure of the items there as well instead.
8. No C2V

Thy blessing
1. Full build explanation
2. Build seems okay
3. Bonus: Synergy section

Result: Path of the Infidel
Very incomplete, and that what is there is not very well explained. Make sure that all the things I pointed out as missing are added so that the reader is able to learn more about Janna.

Good luck!
-Meiyjhe

(Do not forget to vote! :D)

Thanks Electro!

I have edited all the sections you gave feedback on. Please have a look over and either approve or give me a few pointers. If you think they are good enough, maybe you can consider voting :P

Thanks,

TDAngel.

Nice guide. However, if I may suggest a few things....

• Fleshing out the items on the cheat sheet should help. Yes, supports generally have a very straight forward build, but giving only one build path for people to try wouldn't really work.
• Is it possible to get descriptions on the abilities, instead of just tips and tricks? I feel that this will flesh out your guide a lot more.
• A better fleshed out mastery section may help as well.
  
  Other then those things, its a pretty good guide.
  
  Electro522

Thanks for the feedback, I'll change it now. :)

EDIT: I have fixed the changes, however I didn't include Void Staff because I felt that Janna didn't do enough magic damage to warrant the magic pen as a last item.

I kinda disagree on your Runes because I think Greater Seal of Health + Greater Quintessence of Armor along with Greater Mark of Hybrid Penetration fits more. Warmog's Armor is inferior to the alternative items you mentioned because it isn't supportive and you build items like Rabadon's Deathcap, Void Staff or Twin Shadows in some situations aswell.