You failed at picking the correct color runes for your rune choices. Blue should be AP, Yellow should be AS, and red should probably be Magic Penetration if you are looking for kills, or just more AP if you're going that route.

With the runes being so messed up, I have absolutely no faith in the rest of this build (without even having viewed the rest) whatsoever.

You are missing 2pts in Zephyr.

You can play with this, but I find that having some Mpen runes and items, make for better farming. I play an AP build, and have a build on here as well. Its good for beginners that want to try her, but I dont see the dmg aspect. I see alot of survivability though. Thats always good for Janna.